An Analysis of the Answer to the First Model of the Year Three of High School
The answers to the 2023 biology test questions of the third year of high school in Qingdao City are as follows: 1. Multiple choice questions: 1. The answer was C. 2. The answer was D. 3. The answer was C. 4. The answer was C. 5. The answer was B. 6. The answer was D. 7. The answer was D. 8. The answer was D. 9. The answer was B. 10. The answer was D. 11. The answer was B. 12. The answer was C. 13. The answer was C. 14. The answer was A. 15. The answer was A. Second, multiple-choice questions: 16. The answer was D. 17. The answer was a B D. 18. The answer was CD. 19. The answer was B.C. 20. The answer was AC. Third, non-multiple choice questions: 21. (1) Light intensity and CO2 concentration are related factors (2 points);Gs is a key factor in the answer (2 points). (2) Compared with natural light, under shade, the stomatal conductivity of leaves increased slowly, and Ci value decreased very little in the initial stage after illumination (2 points). (3) The light reaction produced (H) and ATPincreased, and the dark reaction strengthened, but the stomatal conductivity was lower, and the intercellular CO2 concentration decreased; the stomatal conductivity increased, and the intercellular CO2 concentration gradually increased (2 points). 22. (1) Genetic mutation is related (2 points); A trait can be affected by multiple genes (2 points). (2) The answer is 3 (2 points), and (5) is related to the answer (2 points). (3) In mutant 1, select the double balanced lethal line fruit fly and the wild type non-lethal line fruit fly to cross, and let the male and female fruit flies in F1 mate freely. (2 points) If F2 wild type: mutant = 6:1, then the mutant gene is located on the 2nd (1 point); if F2 wild type: mutant = 3:1, then the mutant gene is located on the other (1 point). Read more exciting novels for free
The Biology Examination Paper and the Answer and Analysis of the Year Three 2023 of the First Model School in QingDao
In 2023, the biology test questions of the third year of high school in Qingdao City included multiple choice questions and non-multiple choice questions. ** I. Multiple-choice answers and some analysis ideas ** 1. There were a total of 20 multiple-choice questions. - The answer to questions 1 - 5 was CD. - The answer to questions 6 - 10 was DDDBD. - The answer to questions 11 - 15 was BCCTA. - For these multiple-choice questions, each sub-question was given 2 points, and only one option for each sub-question met the requirements of the question. 2. There were also five multiple-choice questions (questions 16 - 20). - The answer to question 16 was D. - The answer to question 17 was ABD. - The answer to question 18 was CD. - The answer to question 19 was B.C. - The answer to question 20 was AC. 3 points for each sub-question. If one or more of the options met the requirements of the question, 3 points would be awarded if all of them were correct, 1 point would be awarded if all of them were correct, and 0 point would be awarded if some of them were wrong. ** 2. Non-multiple choice questions ** 1. 21 questions (9 points) - The factors involved were light intensity and CO2 concentration (2 points), as well as Gs (2 points). - Under the shade and natural light, the stomatal conductivity of the leaves increased slowly under the shade, and the Ci value decreased very little (2 points) in the initial stage after the light. - The reason was that the [H] and ATP-produced by the light reaction increased, and the dark reaction was strengthened, but the stomatal conductivity was lower, and the intercellular CO2 concentration decreased. As the stomatal conductivity increased, the intercellular CO2 concentration gradually increased (2 points). 2. 22 questions (15 points) - It involved genetic mutation (2 points) and one trait could be affected by multiple genes (2 points). - There was information about the numbers 3 (2 points) and 5 (2 points). - There was also an experimental design: in mutant 1, the double-balanced lethal line fruit flies were selected to cross with the wild-type non-lethal line fruit flies, and the male and female fruit flies were allowed to mate freely. If the ratio of wild type: mutant F <2> flies was 6:1, then the mutant gene was located on the 2nd <2>(1 point); if the ratio of wild type: mutant F <2> flies was 3:1, then the mutant gene was located on other <2> flies (1 point). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Junior high school biology final exam paper analysis model essay and answer book
The following is an example of an analysis of a junior high school biology final exam paper: ##1. Overall Assessment of the Test Paper 1. ** Guiding ideology of proposition ** - The test paper reflected the idea of "three advantages". According to the middle school curriculum standards, students 'basic biological knowledge and basic skills were examined from three aspects: knowledge and skills, process and methods, emotional attitudes and values. For example, it not only tested basic knowledge such as life phenomena and biological structure, but also tested students 'ability to use knowledge to solve problems in some comprehensive questions. It also touched on students' humane feelings and value orientation through questions related to life. 2. ** Knowledge coverage and key tests ** - The knowledge points covered a wide range. The basic concepts and principles in the textbooks, such as life phenomena, the basic structure of organisms, physiological changes, biological evolution, experimental exploration, and common sense of life, were all reflected. At the same time, on the basis of paying attention to the investigation of basic knowledge, they paid attention to the induction and summary of knowledge. There were few questions that only examined one knowledge point. Many questions involved the same knowledge block or multiple knowledge points in several knowledge blocks. For example, some comprehensive questions required students to have the ability to integrate knowledge. 3. ** Contact with reality ** - There was a certain proportion of questions related to production, life, society, and science and technology. These questions were based on the students 'learning, life, society, environment, and scientific development. They were designed to match the students' knowledge and skill level, such as transplanting techniques, experiments on the living conditions of mice, and the role of forests. This reflected the concept that living creatures originated from life and served life. It helped guide students to pay attention to social problems and observe problems from a biological perspective. ##II. Analysis of Students 'Answer Patterns 1. ** Basic Knowledge ** - The students 'basic knowledge was weak, which was reflected in their poor mastery of biological terms. Many common biological terms were easy to confuse, such as organic matter and mineral matter, peel and seed coat, etc., which led to mistakes and loss of marks when answering questions. 2. ** Ability ** - [Question review ability: The student's ability to solve problems through careful review is poor, and he cannot accurately understand the meaning of some questions.] - ** Concept Comprehension **: unclear understanding of the concept, affecting the accuracy of the answer. - ** Study Habits **: Poor study habits. Some handwriting is illegible, the paper is dirty, and there are many typos. ##3. About the Answer As he did not obtain the complete junior high school biology final exam paper and standard answers, he could not provide a comprehensive answer. However, generally speaking, the answers to questions about basic knowledge were mainly based on the accurate concepts and principles in the teaching materials. For example, questions about cell structure would be answered according to the names and functions of the various parts of the cell structure. For comprehensive questions, multiple knowledge points would be used to logically organize them. For questions involving the relationship between biological evolution and the environment, the theory of evolution and the choice of the environment on living things would be integrated to answer. For the experiment questions, the answers had to include the experimental principles, steps, expected results, and conclusions. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Analysis of the Questions and the Answer in the Biology Course of Senior High School
The following are some questions and answers that might be involved in the high school biology seminar: ** I. Problems related to the metabolism of cells ** 1. ** Question **: briefly describe the process of scientific discovery of the essence of the enzyme and the characteristics of scientific exploration. - Before Pasteur, he believed that fermentation was a pure chemical reaction and had nothing to do with life. Pasteur and Liebig respectively proposed that the fermentation in brewing was related to living yeast cells. Without living cells, sugar could not be turned into alcohol, and that the fermentation was caused by certain substances in the yeast cells, and these substances could only play a role after the yeast cells died and cracked. Through experiments, Bichner proved Liebig's point of view was correct, saying that the substance that caused fermentation was a zymase, but what exactly was the zymase was still unclear. Later, Sumner extracted urease crystals with high purity from sword bean seeds for the first time and proved that urease was a protein. This process showed that scientific discoveries were not smooth sailing. Many scientists needed to repeatedly demonstrate, debate, and experiment to reach scientific conclusions. 2. [Question: What is the relationship between the metabolism of the cell and the metabolism of the cell?] - Cell metabolism is composed of a series of chemical reactions in the cell. These reactions need to be carried out at high speed under normal temperature and pressure, and they require the catalyze of an enzyme. Because the reaction environment inside the cell was at normal temperature and pressure, in order to make the chemical reaction proceed quickly, the reaction required the activation energy to be reduced. 3. [Question: How do you determine if an protein is an protein?] - [Answer analysis: Biuret reagent can be used to determine whether this type of protein is a protein.] ** 2. Questions related to the ability to explore biological experiments ** 1. [Question: In the college entrance examination, how do you test your ability to design an experiment plan?] - For example, the 30th question of National Volume A required students to design an experimental plan to verify that protein fragments could appear in the lysomes of engulfing cells. The 32nd question of the new curriculum standard required students to design an experimental plan to test the AIDS virus in blood samples. This tested the students 'ability to use basic experimental methods and techniques to solve new problems. 2. [Question: Using genetic engineering experiments as an example, how does the biology college entrance examination test the understanding of the principles and objectives of the key links of the experiment?] - Question 38 of National Volume A used genetic engineering to express the target protein as the background. It examined the principles and purposes of the key links such as the double digestion of the plasmid-carrier and the preparation of competent cells. It allowed students to feel the rigorous and realistic characteristics of scientific research in the process of solving common problems in scientific research, so as to examine their understanding of the principles and purposes of the key links of the experiment. ** 3. Questions related to the application of biological knowledge in production and life ** 1. [Question: Give an example of how the college entrance examination biology questions reflect the application of biological knowledge in solving practical production and life problems.] - ** Answer Analysis **: Question 34 of the new curriculum standard volume mentioned the practical problem of the high yield of the female plants of the white thorn melon being favored by consumers. Students were required to use genetic crossing methods to screen out the pure hybrids of the female plants of the white thorn melon to solve the problem of high yield. Question 37 of National Volume A focused on the theme of rational use of disinfectant to reduce infectious diseases. It examined the key points of the exploration process such as microorganisms cultivation, bacteria counting, coating plates, and analysis of experimental results. It guided students to use the basic methods of scientific inquiry to solve practical problems in production and life, reflecting the application of biological knowledge in solving practical production and life problems. ** IV. Core literacy and teaching-related issues in biology ** 1. [Question: How to implement the core knowledge of biology in biology class?] - ** Answer Analysis **: Taking the classroom teaching " Passive Transportation " as an example, at the beginning of the class, the students were used to think about life phenomena, stimulate the curiosity of students to explore new knowledge, arouse the enthusiasm of students in the form of question strings, set up independent inquiry and group discussion sessions, and let students feel a sense of participation. In the teaching process, they combined life examples to understand the knowledge points, such as explaining the principle of water entering and leaving the cell. This could well fulfill the requirements of developing students 'scientific thinking and social responsibility in the core accomplishment of biology. In addition, the course " Gene Mutation " focused on the occurrence and mechanism of cancer. It guided the students to analyze and explore the concept, essence, characteristics, significance, etc. of gene mutation independently. It was also helpful to improve the students 'core biological quality. 2. ** Question **: How does the inter-school biology exchange activity promote teachers 'teaching? - Take the inter-school biology exchange between Jigang High School and Laiwu No.1 Middle School as an example. The inter-school exchange provided a platform for teachers to exchange teaching models and study school-based curriculum. Through the exchange, teachers could learn the experience of developing and implementing the biology school-based curriculum in other schools. For example, the teachers of Jigang High School realized that the content of the biology school-based curriculum in Laiwu No.1 Middle School was rich and layered. They could also learn different classroom teaching methods, such as teacher guidance and student inquiry in the classroom of Laiwu No.1 Middle School. They could truly realize the student-centered teaching mode, thus promoting the updating of teachers 'teaching ideas and the reform of teaching methods, and improving the teaching level of teachers. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Junior high school biology examination analysis summary and reflection model essay
The following is a summary of the analysis and reflection of the junior high school biology examination: After the junior high school biology exam, analyzing and reflecting on the exam was an important part of improving the learning effect. ** I. Results ** Judging from the results of this exam, it reflected that there were certain advantages and disadvantages in biology. Some students achieved relatively good results, which indicated that they had a good performance in mastering and applying biological knowledge. However, there were still quite a number of students whose results were not ideal, revealing many problems in the learning process. ** 2. Wrong Question Analysis ** 1. Basic knowledge - Some students made mistakes in basic knowledge such as cell structure and biological classification. For example, the vague memory of the difference between the cell structure of animals and plants reflected the lack of emphasis on basic knowledge in the classroom learning process and the lack of a solid grasp of the basic concepts and principles of biology. - The use of biological terms was inaccurate. For example, when answering questions about the ecosystem, the concept of producer, consumer, and decompose was confused. This may be because the understanding of these concepts was only superficial and did not have a deep understanding of their functions and relationships in the ecosystem. 2. Experiment and application part - He lost more points in the questions involving experimental operation and analysis of experimental results. For example, students might not be proficient in the steps of using a microscope during the actual operation process, resulting in them not being able to answer accurately in the exam. This reflected that the students 'hands-on ability and understanding of experiments needed to be improved in the experimental teaching process. - As for the application of biological knowledge in real life, such as the analysis of familial hereditary diseases according to the law of inheritance, the students showed a lack of ability to combine theoretical knowledge with practical situations. They could not flexibly apply the knowledge they had learned to solve practical problems. ** 3. Reflection on learning methods ** 1. preparation link - Many students didn't develop the habit of previewing, which led to them not being able to keep up with the pace of the teacher in class and not being able to accept new knowledge effectively. Previewing could help students understand the general framework of the course content in advance, find out the difficulties and questions, and listen more specifically in class. 2. classroom learning - In class, some students were not focused and could not listen to every knowledge point explained by the teacher. The knowledge points of biology were more coherent. A single mistake could lead to difficulties in understanding subsequent knowledge. The key content written on the blackboard by the teacher was often the core knowledge of the course. However, some students did not pay attention to this, which affected their overall grasp of the knowledge. 3. Consolidating After Class - After-class review and consolidation were important parts of deepening knowledge memory and understanding, but many students did not do enough in this regard. For example, he didn't organize his notes in time, didn't take the initiative to check the missing content in the classroom, and lacked the awareness to consolidate his knowledge by doing exercises. ** IV. Reflection on teaching strategies (from the perspective of teachers, if applicable)** 1. teaching method - In the process of teaching, there might be problems with the lack of flexibility and variety of teaching methods. For some abstract biological knowledge, such as the breathing function of cells, it might be difficult for students to understand it simply by explaining it. They could use multi-media teaching methods, such as animation demonstration, to visualize abstract knowledge and improve students 'interest in learning and understanding. - In terms of experimental teaching, although experimental courses were arranged, the explanation before the experiment and the guidance during the experiment were not detailed enough. The purpose, steps, and precautions of the experiment should be introduced in more detail before the experiment. Students 'mistakes should be discovered and corrected in time during the experiment. 2. teaching progress - In the arrangement of the teaching progress, there might be situations where some knowledge points were explained too quickly, and the students 'acceptance ability was not fully taken into account. Some students might be afraid of biology because they could not keep up with the progress. ** 5. Modification measures ** 1. the students - They should develop good study habits, including previewing, listening carefully, and reviewing in time after class. During the preparation, one could have a preliminary understanding of the content to be learned by reading the teaching materials and consulting the materials. Focus in class, actively participate in classroom interactions, and follow the teacher's train of thought. After class, you should organize your notes in time and consolidate what you have learned by doing practice questions and reciting key knowledge points. - Pay more attention to the experiment, actively participate in the experiment course, carefully review the experiment content before the experiment, strictly follow the operating procedures during the experiment, and analyze and summarize the experiment results after the experiment to improve their experimental ability and knowledge application ability. - He focused on systematic learning of knowledge, linking various knowledge points in the biology discipline to build a complete knowledge system. For example, in the process of learning about biological evolution, one could connect knowledge points such as genetic variation and ecological environment. 2. Teachers (if applicable) - The teaching method should be optimized and suitable teaching methods should be selected according to different teaching contents. For example, when explaining the reproductive and development process of living things, pictures, videos, and other materials could be used to let students understand this process more intuitively. - Reasonably adjust the teaching progress. According to the actual learning situation of the students, slow down the teaching speed appropriately to ensure that the students can understand and master each knowledge point. At the same time, it was necessary to strengthen the tracking and feedback of students 'learning situation, discover the problems in the learning process in time, and give targeted guidance. - Increase classroom interaction, encourage students to raise questions and doubts, and cultivate students 'independent learning ability and innovative thinking ability. For example, they could organize group discussions so that students could learn from each other and improve together. Through the analysis, summary and reflection of the junior high school biology examination, we can identify the problems in the learning and teaching process, and formulate corresponding improvement measures, so as to improve the quality of biology teaching and learning. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The answers and analysis of the biology analysis questions of the third year of high school in 2023
First, the answer to the multiple-choice question: 1. C 2. D 3. C 4. C 5. B 6. D 7. D 8. D 9. B 10. D 11. B 12. C 13. C 14. A 15. A Second, the answer to the multiple-choice question: 16. D 17. ABD 18. CD 19. BC 20. AC Third, non-multiple choice questions: 21. (9 points) - (1) Light intensity and CO2 concentration (2 points);Gs (2 points). - (2) Shady. Compared with natural light, under shade, the stomatal conductivity of the leaves increased slower, and Ci value decreased slightly (2 points) at the initial stage after illumination. - (3) The light reaction produced (H) and ATPincreased, and the dark reaction strengthened, but the stomatal conductivity was lower, and the intercellular CO2 concentration decreased; the stomatal conductivity increased, and the intercellular CO2 concentration gradually increased (2 points). 22. (15 points) - (1) Genetic mutation (2 points), one trait can be affected by multiple genes (2 points). - (2) 3 (2 points), 5 (2 points) - (3) In mutant 1, select the double balanced lethal line fruit fly and the wild type non-lethal line fruit fly to cross, and let the male and female fruit flies in F1 mate freely. (2 points) If F2 wild type: mutant = 6:1, then the mutant gene is located on the 2nd (1 point); if F2 wild type: mutant = 3:1, then the mutant gene is located on the other (1 point). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The Principle of Reaction and the Analysis of the Answer to the Big Chemistry Questions in Senior High School
The following are some examples of high school chemistry questions related to the principle of reaction and the analysis of the answers: ** I. Reaction principles related to the preparation of Titanium Dioxidefrom Titanium Ore and the subsequent production of Titanium ** 1. ** Titanium Ore Purification and Reaction ** - Treatment of FeO impurities when purifying titanium ore: - If titanium ore (FeTiO2, containing FeO, Al2O2, SiO2 and other impurities) is used to prepare TiO2, the reaction 2H2SO2 + FeTiO2 = TiOSO2 + FeSO2 + 2H2O occurs in step 2. The removal of FeO impurities needed to be determined according to the requirements of the subsequent production on the purity of the product. Since there were no more restrictions given here, it was not clear whether it needed to be removed. - Reaction when purifying titanium ore with a concentrated solution of soda: - For the aluminum dioxide O in the ore, the reaction will occur: aluminum dioxide O +2NaAlO +2NaAlO + H O; for SiO2, the reaction will occur: SiO2 +2NaAlO +2NaAlO +H O. 2. ** Reaction principle of preparing metallic titanium with TiO2 ** - ** Method 1: Electrolysi ** - Titanium was prepared by using the treated TiO2 as the negative pole, the lead as the positive pole, the molten CaCl2 as the bath, and the carbon block as the bath. - The reaction formula of the negative reaction is: TiO2 + 4e = Ti+2O2. - The reason why carbon blocks needed to be added to the cell regularly during the fermentation process was that during the fermentation process, the reaction 2O2-4e =O <2> occurred on the positive pole, and the generated oxygen would react with the carbon blocks, thus ensuring the continuous fermentation process and reducing the loss of the positive pole. - ** Method 2: chloride-reduction method ** - The first step was to react TiCl2 with Cl2 and C to obtain TiCl2, which was then reduced to Ti with titanium. The reaction of TiCl2 (l)+ O2 (g)= +151 kJ·mol1 is difficult to occur. - When carbon was added, it was known that C(s)+O ^(g)=CO ^(g), and the two reactions were added according to Gass 'law to obtain TiCl2 (s)+C(s)+2Cl2 (g)= TiCl2 (l)+ CO2 (g). The reaction had a value of +151 kJ·mol1, and a value of-243 kJ·mol1. - From the perspective of chemical equilibrium, when carbon was added to the chloridizing reaction system, the reason why the chloridizing reaction could proceed smoothly was that after carbon was added, the carbon reacted with oxygen, consuming the oxygen generated by the reaction of TiO2 (s)+2Cl2 (g)=TiCl (l)+ O2 (g), which reduced the oxygen concentration in the reaction system. According to Le Chatelier's principle, the equilibrium moved in the direction of positive reaction, so that the chloridizing reaction could proceed smoothly. ** 2. Principles of chemical reactions, comprehensive questions, characteristics, and related reaction principles ** The comprehensive questions on the principles of chemical reactions often used "Desulfurization, Denitration, Reduction of carbon dioxide, Water Gas Production and New Material Production, New Technology Research for the Synthesis of Ammo" as the proposition materials. 1. ** Principle of Desulfurization and Denitration ** - For example, the sulfur removal reaction may involve reactions such as Cao + SO2 = CaSO, 2CaSO + O2 = 2CaSO, etc. The principle was to use the reaction of an acidic oxide-sulfur dioxide (SO2) with an basic oxide-sulfur dioxide (CaOx), and then further oxidize the sulphites into sulphates, thereby achieving the purpose of removing sulfur. - Denitration reactions may involve reactions such as the catalyze of nitrogen, such as 4NH2 + 5O <2>= 4NO +6H <2> O (under the effect of a catalyst), and then NO is further converted into non-toxic nitrogen. This process uses the oxido-reduction reaction to convert nitrogen dioxide into harmless substances. 2. ** Reaction Principle of CO2 Reduction ** - It may involve a fixed reaction of carbon dioxide, such as CO2 <2>+ CaCO2 <2>= CaCO2 <2>+ H2 <2> O, which is a reaction that absorbs carbon dioxide with an alkali-based solution. In some chemical processes, there may also be reactions that use a catalyst to convert carbon dioxide into other useful substances. For example, carbon dioxide and hydrogen react under certain conditions to form methanoi (CO2 + 3H → CH2·H·O + H·O, under the effect of a catalyst). In this way, carbon dioxide is reduced and resources are converted. 3. ** Water gas preparation reaction principle ** - The water gas preparation reaction was C + H <2> O(g)=CO + H <2>(under high temperature conditions). This was a typical reaction between carbon and water vapor. The high temperature was used to enhance the reduction of carbon, reducing the hydrogen in the water and producing carbon dioxide at the same time. 4. ** Reaction principles related to the research of the new process of synthetic nitrogen ** - The traditional synthetic nitrogen reaction was N Chi +3H Chi 2NH2 (under high temperature, high pressure, and catalyst conditions). In the research of new processes, they might study new catalyst to increase the reaction rate, change the reaction conditions to reduce energy consumption, etc. According to Le Chatelier's principle, high pressure and low temperature were conducive to the positive reaction, but in actual industrial production, factors such as reaction rate had to be considered to choose the appropriate reaction conditions. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Guangzhou City high school model composition
The following are the questions for the first model essay of the high school entrance examination in some districts of Guangzhou City in 2024: - Yuexiu District: " A little less___, a little more___." - Zengcheng District: "I thought of you again." - Tianhe District: "_____is my happiness." - Liwan District: " The running you and the chasing me." - Huangpu District: " Guard____" - Huadu District: For... And it was worth it! - Panyu District: " I was lucky that day." - Baiyun District: "_____, let me____." - South China Normal University Affiliated High School: " Right beside me." - Guangzhou University Affiliated High School: "_____lights me up." " Her Shenzhen-Writing the Future " is equally exciting. Everyone is welcome to click and read it!
How to write the English essay model for future high school life in the third year of junior high
The following is an example of an English essay about the future high school life: **My Future High School Life** As the days go by, I'm always looking forward to my future high school life. In high school, I expect that my academic life will be both challenging and fulfilling. I will have a variety of subjects to study, such as advanced mathematics, comprehensive English, and in - depth physics. For English learning, I plan to read more classic English novels and participate in English speech contests to improve my language skills. In math class, I will strive to solve complex problems and explore the mysteries of numbers. I also anticipate a rich extracurricular life. There will be various clubs in high school, like the science club where I can conduct interesting experiments with my classmates, and the art club which allows me to express my creativity through painting or handicrafts. I might join the school's sports team as well, perhaps the basketball team, to keep fit and experience the excitement of team competitions. Friendship is another important part of my future high school life. I believe I will meet a group of like - minded friends. We will study together, discuss various topics from academic knowledge to the latest news, and support each other during difficult times. Overall, my future high school life will be a wonderful journey full of growth, exploration, and joy. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The answers to the biology analysis questions of the third year of high school in 2023 and the answers
The following are some of the answers and analysis of the biology test questions of the first mock exam of the third year of high school in 2023 in Shandong Province: 1. Single choice questions 1. Answer: B. - Analysis: During the synthesis of cell membrane shaping protein, the location is provided by the Ribosome, and the power is provided by the mitochondria.(The main energy supplier in the cell, the plastids are mainly found in plant cells and are mainly related to photosynthesis, not involved here), A is wrong; the "molecular garbage bag" is a vesicle, mainly composed of lysomes and protein, B is correct; the "recycling factory" may be a lysoma, and the "component" may be an amine acid.(Because it is a product of protein decomposition, not a primer), C error; The organelle that can form vesicles in human cells includes the plasmatic reticule and the Golgi apparatus, but the centric body cannot form vesicles, D error. 2. Answer: A. - Analysis: The V-disorderly transport of H+ from the cellular matrix into the vesicle was a process that consumed ATP. It was an active transport, not an auxiliary spread. A was wrong. Inhibition of the activity of Cys transporter on the tonoelle would affect the process illustrated in the diagram, resulting in abnormal function of the mitochondria. B was correct. Cys entered the vesicle against the concentration slope by using the potential energy of H+. It was an active transport. C was correct. The process illustrated in the diagram indicated that there was a connection between the vesicle and the mitochondria. There was both division of labor and cooperation. D was correct. 3. Answer: D. - Analysis: The cells in the root meristematic zone of onions had no fat, so orange granules could not be observed with Sultan III staining. A was wrong; The cells in the root meristematic zone of onions became square and tightly arranged after being dissociated, rinsed, stained, and made into slices. B was wrong; The widest color of the green tube-shaped leaf on the filter paper was the cyanophile a (blue-green), C was wrong; The color of the purple onion scale leaf was cyanophile, which could not be extracted with absolute alcohol (absolute alcohol was used to extract the color in the plastids). D was correct. 4. (As the question did not give all the questions about this question, the answer and analysis could not be given accurately.) 2. Multiple-choice questions (As the questions did not give all the questions in this part, all the answers and analysis could not be given accurately) Third, non-multiple choice questions 21. - (1) Answer: Light intensity and CO2 concentration;Gs. - Analysis: According to the experimental content, the influencing factors are light intensity and CO2 concentration, and Gs is the relevant measurement index. - (2) Answer: Shade. Compared with natural light, the stomatal conductivity of leaves under shade increased slowly, and the Ci value decreased very little in the initial stage after light. - [Analysis: Obtain the relevant characteristics under the shade condition from the comparison of experimental data.] - (3) Answer: [H] and ATP-produced by light reaction increased, and dark reaction strengthened, but stomatal conductivity was lower, and intercellular CO2 concentration decreased. As stomatal conductivity increased, intercellular CO2 concentration gradually increased. - Analysis: This phenomenon was explained by the relationship between light and dark reactions and the effect of stomatal conductivity on intercellular CO2 concentration. 22. - (1) Answer: Genetic mutation; a trait can be affected by multiple genes. - [Analysis: Genetic changes may be caused by genetic mutation. From the content of the question, it can be analyzed that one trait is related to multiple genes.] - (2) Answer: 3. - (The analysis needs to be based on the complete information related to the genes and traits of the fruit fly. Due to partial missing, it is impossible to give details.) - (3) Answer: In mutant 1, choose the double-balanced lethal line fruit fly to cross with the wild type non-lethal line fruit fly, and let the male and female fruit flies in F1 mate freely. If F2 wild type: mutant = 6:1, then the mutant gene is located on the 2nd; if F2 wild type: mutant =3:1, then the mutant gene is located on other genes. - [Analysis: Through crossbreeding experiments, according to the inheritance law of the genes on different microorganisms, the corresponding proportion of offspring is obtained to determine the genetics of the genes.] - (4) Answer: 4, 2/3. - (The analysis needs to be based on the complete information related to the genes and traits of the fruit fly. Due to partial missing, it is impossible to give details.) 23. - (1) Answer: Assist in spreading;Na+ channel is open, Na+ flows in; cerebral hemisphere; efferent nerve endings and the diaphragm and abdominal muscles they inhabit. - [Analysis: According to the characteristics of the material transport method, it is determined to assist in the spread. The nerve center of the vomiting reflex is in the cerebral hemisphere, and the relevant muscles are indominated by the efferent nerve endings.] - (2) Answer: Choose healthy mice with the same physiological state and divide them into two groups, A and B. Group A used chemical genetics to specifically suppress M neurons, while Group B was used as a control. Stimulate the two groups of mice with toxins and observe the vomiting behavior of the mice. Inhibition of Ca2 + channel activity, reduction of Ca2 + influx, inhibition of the expression of the Tachkinin gene in the M-type neurons. - Analysis: Investigate the role of M neurons in vomiting behavior by setting up a control experiment. From the perspective of affecting the physiological process of the neurons, propose measures to suppress the relevant channels and gene expression. 24. - (1) Answer: Species composition; dominant species in the community. - [Analysis: This is a concept related to community. Species composition and dominant species are important aspects of community research.] - (2) Answer: Yunnan pine forest. The survival rate and mortality rate of Pseudotacia glazei in the Yunnan pine forest community reached a balance at a lower age class. - [Analysis: According to the relevant data of Yunnan pine forest in the map, the survival characteristics of Lancang yellow cedar can be obtained.] - (3) Answer: No. The data above does not show the proportion of individuals of different ages in the population. - [Analysis: According to the knowledge of the age structure of the population, the data in the picture cannot reflect the age structure.] - (4) Answer: The young individuals of the population of Pseudotacia glazei in Fig. 2 and Fig. 3 compete more fiercely with other species for survival resources and space. - [Analysis: Obtain the competition status of young individuals from the comparison of the data in the map.] 25. - (1) Answer: Denature the protein and separate it from the DNA; separate the DNA from the protein. - [Analysis: In related experimental operations, the purpose of this operation is to deal with the relationship between protein and DNA.] - (2) Answer: B. The primer is too short and has a weak specialty. The two primer will complement each other. - Analysis: Explain the reason for choosing B according to the characteristics of the primer and the requirements in the experiment. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
2019 Zunyi City High School Entrance Examination Biology Test Paper Answer and Analysis
1. Multiple choice questions: 1. The basic unit that constituted the structure and function of the giant panda was the cell. Other than viruses, cells were the basic unit of the structure and function of organisms. The tissues, organs, and systems of organisms were all composed of cells. From the perspective of structure and function, cells were independent units, so the answer was B. 2. The magnifying power of the microscope = the magnifying power of the objective lens × the magnifying power of the eyepieces. When the eyepieces were multiplied by 5 times and the objective lens was multiplied by 10 times, the object image was magnified by 5×10 = 50 (times). The answer was C. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>