The second volume of biology in senior high school is compulsory
The second volume of biology was compulsory. Read more exciting novels for free
The answer to the compulsory textbook of biology in senior high school
The following are the answers to some of the questions in the Jiangsu version of the high school biology compulsory textbook: Chapter 1: The molecular composition of cells The Elements and Inorganic Compound in the Cell - ** Speculation Questions ** - Among the chemical elements that made up living things, C, H, O, and N were the most abundant. - Free water was a good solution for many ions, not bound water. - If muscle weakness occurs, the substance that may be lacking is calcium. - ** Usage Questions ** - The trace elements were iron, mn, zn, copper, b, al, co, and se. - The carbon exists in the form of carbon dioxide, oxygen in the form of water, hydrogen in the form of water, calcium in the form of carbon dioxide, phosphorus in the form of dipotassium hydrogen orthhosphate, and potassium in the form of kci. They are involved in the composition of substances in the body; Na ions maintain the stability of the osmonic pressure of the extra-cellular fluid; K ions participate in the activation of more than 60 kinds of membranes during plant growth and development; Ferrous ions are the components of many membranes; and Magnesium ions are an important component of the phylls. - Legume plants such as alfalfas and soybeans had a nitrogen fixing bacteria at the roots, which could help them survive the winter. - Free water was a good solute. The ions and molecules needed for cell life could be dissolved in it and flow with the water to participate in the reaction. Metabolic waste could also be discharged from the body through water. ** Section Two: Carboids and Lipids in the Cell ** - ** Speculation Questions ** - Glycogen and glucose were the main energy substances, fat was an important energy storage substance, and Cellulose was a plant cell structure substance that could not be used as an energy substance. - Lipids were divided into fats, lysomes, and steroids, but lysomes did not belong to steroids. - It was not advisable to reduce overweight weight only by reducing the intake of sugar and fatty foods. It was also necessary to combine it with moderate physical exercise. - ** Usage Questions ** - Plant cells contained starch and starch, and the process of making syrup was similar to the biological method. - The second biological method was used to utilize the raw material of the Cellulosic. - Celluloses and other glycans were important structural substances in plant cells, while glucose was the main energy source for life activities. - Ferlin's reagent could only identify reducing sugar. Sweet potatoes mainly contained non-reducing sugar such as starch, so it could not be used to identify them. However, Sultan III staining solution could be used to detect the fat in sweet potatoes. ** Section Three: The Nucleic Acid and Nucleic Acid in the Cell ** - ** Speculation Questions ** - Nucleic acid in the human body was composed of eight kinds of nuclei (adenine deoxy, guanine deoxy, cystine deoxy, thymine deoxy, adenine Ribo, guanine Ribo, cystine Ribo, and uracil Ribo). Uridine Ribo was composed of uracil, Ribo, and Phosphoryl. - The seeds of wheat, sorghums, and other plants are rich in starch, while animals such as cattle and sheep are rich in protein and fat. - ** Usage Questions ** - In contrast to the "food pyramid", if you eat too much dessert and meat, you may be obese, and if you eat too little vegetables and fruits, you may lack vitamins. - Mung beans may contain more starch; it is not possible to judge whether they are nutritious based on the content of protein; the cell composition of beans cannot be separated from protein. Cell structure and life activities (Part) - In the content related to organic matter in cells, there were various statements: - Not all kinds of sugar could be used as a plant energy material. Ribose and deoxy sugar formed the genetic material, and the plant cell wall made of Cellulose could not be used as an energy material. Therefore, it was wrong to say that all kinds of sugar could be used as a plant energy material. - The basic framework of the cell membrane was composed of a double-layer consisting of lysomes. Choline was an important component of animal cell membranes and was involved in the transport of fats in the blood. Therefore, it was correct to say that both lysomes and Choline were components of animal cell membranes. - The main reason for protein degeneration was the destruction of the spatial structure rather than the cleavage of the bond. Deoxy acids were connected to each other by the bond of the ester. Therefore, it was wrong to say that the high temperature degeneration of the protein was due to the cleavage of the bond, and the single chain was formed by the bond of the deoxy acids. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High school biology review compulsory 1
High school biology compulsory knowledge summary
1. ** Levels of life system **: The cell is the most basic life system on Earth. The life system is arranged from small to large as cell → tissue → organ → system → individual → population → community → ecosystem → biosphere. 2. ** Cell classification **: According to the cell's nucleus without a nuclear membrane as a boundary, it is divided into two categories: eukaryonic cells and protokaryonic cells. 3. ** The material foundation of life ** - ** protein **: The basic unit that makes up protein, all life activities are inseparable from protein, and it is the main bearer of life activities. - Nucleic acid: A substance that carries genetic information in cells. It plays an extremely important role in the genetic variation of organisms and the synthesis of protein. - ** Carboids **: The main energy source. - ** Fat **: A good energy storage material in the cells. The carbon chain was the backbone of the biological molecules, and the basic unit was called a single unit. For example, the single unit that made up the acid was a single acid, and the single unit that made up the sugar was a single sugar. - [Water]: It exists in the cell in the form of bound water (combined with other substances in the cell) and free water (existing in a free form and can flow freely). - ** Salt **: Most of the cells exist in the form of ions. 4. Cell theory: It was mainly established by the German botanist Schleiden and the zoologist Schwann. The content included that cells were an organism, and all animals and plants were developed from cells and composed of cells and cell products. A cell was a relatively independent unit that had its own life and played a role in the overall life formed by other cells. New cells could be produced from old cells. 5. ** Cell membrane and biological membrane system ** - The cell membrane was mainly composed of fats and protein. Phospholiptides and steroids in fats were important components of the cell membrane. Their functions were to separate the cell from the external environment, control the entry and exit of substances into the cell, and carry out information exchange between cells. - The membrane system of a living organism was composed of an organelle membrane, a cell membrane, a nuclear membrane, and other structures. The composition and structure of these biological membranes were similar, and they were closely related in structure and function. 6. Nucleus: It is the genetic information bank that controls the metabolism and inheritance of the cell. It is the control center of the cell's metabolism and inheritance. 7. ** Material Transportation ** - Protoplasma layer: The cell membrane and tonoplasts, as well as the plasma between the two membranes, are called the protoplasma layer. When the concentration of the cell fluid was lower than the concentration of the external solution, the cell would lose water, and the protoplasma layer would be more elastic than the cell wall. It would gradually separate from the cell wall and undergo plasminal separation. - Passive transport: The substances entering and leaving the cell through simple diffusing is called free diffusing; the substances entering and leaving the cell through the carrier protein is called assisted diffusing (the diffusing along the concentration slope is collectively called passive transport). - [Active Transport: Transport from the low concentration side to the high concentration side requires the assistance of carrier protein and consumes the energy released by the chemical reaction in the cell.] 8. ** Cell metabolism ** - The many chemical reactions that take place in cells at all times are collectively called cell metabolism. The energy required for a molecular to change from a normal state to an active state that was prone to chemical reactions was collectively called activation energy. The effect of an electron on the activation energy was even more significant. An electron was an organic substance produced by living cells that had the ability to catalyze. Most of the electron was a protein, and a few of them were a protein. The chemical reactions that the electron was used to catalyze were generally carried out under relatively mild conditions. - ATP-is a high-energy phosphorous acid compound in cells. The process of cell metabolism referred to the process in which organic matter underwent a series of decomposition in the cell to produce carbon dioxide or other products, releasing energy and producing ATP. Aerobic metabolism referred to the process in which cells, with the participation of oxygen, completely decompose organic matter such as glucose through the catalyst of various kinds of membranes to produce carbon dioxide and water, releasing energy and producing a lot of ATP. 9. ** Photosynthesis ** - The four light energy absorbing substances were distributed on the thylakoid membrane of the plastids. The plastids were the place for photosynthesis. - Photosynthesis referred to the process in which green plants used light energy to convert carbon dioxide and water into organic matter that stored energy and released oxygen. It included the light reaction stage (light was required to carry out) and the dark reaction stage (light or not). 10. ** Cell reproduction ** - The relationship between cell surface area and volume limited the growth of cells, and the size of cells was also limited by the control range of the nucleus. Before cells split, they had to undergo material preparation. Cell reproduction included the continuous process of material preparation and cell division. A cell that continuously divided began when one division was completed and ended when the next division was completed. It was a cell cycle. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High school biology concept summary compulsory 2
High school biology compulsory one experiment list
The following are some of the experiments required for high school biology: 1. * * Observe the distribution of DNA and DNA in cells ** - * * Principle **: DNA is green, while DNA is red. Eukaryotic DNA was mainly distributed in the nucleus, while mitochondria and plastids contained a small amount of DNA. - * * Material selection **: oral cells or onion inner skin cells (colorless to prevent color interference). - * * Reagents and effects **: 0.9% NaCl-solution to maintain the normal cell form; 8% sulfuric acid to change the cell membrane penetration, so that DNA and protein can be separated for staining; mixed with the methyla-green pyronine dye solution. - * * Note **: Wash the cells slowly to prevent them from being washed away. - * * Results **: The nucleus is green, and the plasma is red. 2. * * Material Identification ** - * * Detection of reducing sugar ** - * * Principle **: reducing sugar + Fehling reagent → brick-red precipitations. - * * Material selection **: White or almost white materials with high reducing sugar content, such as apples, pears, and white radishes. Green leaves, watermelons, blood, potatoes (containing starch), sugar cane, and beets (containing sugar) cannot be used. - * * Reagents **: Ferlin's Reagents (Solution A: 0.1g/ml of NaOx solution, Solution B: 0.05g/ml of CuSO4 solution). - * * Steps **: Take 2 ml of sample solution and put it in a test tube. Add 1 ml of Fehling's reagent (mix the solution A and B evenly before adding). Heat it in a water bath for about 2 minutes and observe the color change (white → light blue → brick red). - * * Simulated urine sugar test **: Take the urine of normal people and patients with diabetes, and use Fehling's reagent (heated in a water bath), Bancroft's reagent, or urine sugar test paper to test. The urine of patients with diabetes contains reducing sugar and has brick-red deposits, while the urine of normal people does not contain reducing sugar or deposits. - * * Fat Detection ** - * * Principle **: Fat + Sultan III → orange; Fat + Sultan IV → red. - [Material Selection: Tissues with high fat content, such as peanut cotyledon.] - * * Steps **: Make the slices (the thinner the better). Drop 2 - 3 drops of Su Dan III dye solution on the peanut slices for 2 - 3 minutes, then suck off the dye solution. Drop 50% alcohol to wash off the floating color, then suck off the excess alcohol. Drop 1 - 2 drops of water on the slices, cover them with a cover glass, and perform microscopic examination (observe the fat particles dyed orange under low to high magnification). - * * Detection of protein ** - * * Principle **: protein + biuret reagent → purple reaction. - * * Reagents **: Biuret reagent (solution A: 0.1 g/ml of a solution of NaOx, solution B: 0.01 g/ml of a solution of CuSO4). - * * Steps **: Add 2 ml of sample solution to the test tube, add 1 ml of biuret reagent A, and shake it up. Add 4 drops of solution B, shake it up, and observe the color change. 3. * * Observing the flow of the plastids and the plasma ** - * * Materials **: Fresh moss leaves, black algae leaves or spinach leaves, and temporary slices of oral cells. - * * Principle **: Under the microscope, the plastids are green, spherical or oval. 4. [Observing a variety of cells with a microscope (compulsory one, P7)] <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Biology high school compulsory information book recommendation
Here are some recommendations for high school biology textbooks: 1. "The new curriculum standard thoroughly explains the teaching materials for high school biology compulsory 1 (companion teaching edition)", which was helpful for the study of compulsory 1. 2. You can pay attention to the headline of "High School Biology Teaching and Learning" and obtain the "2022 College Entrance Examination Review 'Return to Teaching Materials to Win the College Entrance Examination' Series of Materials: Required One" according to the free method provided by it. It will help you review and prepare for the required one. 3. As for teaching assistants,"handwritten notes or a book" was also a good choice. It would help to further learn biological knowledge after mastering the content of the textbook. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High school biology compulsory three teaching plan progress
Taking the compulsory three teaching plan of the first volume of biology in a sophomore year as an example, in order to create a high-efficiency biology classroom and improve the teaching level and students 'interest in learning and gains, the plan was as follows: Starting from real life, improve the students' biological science accomplishment, guide the students to understand knowledge, and avoid pure theoretical preaching; Collect teaching materials from various aspects to expand relevant knowledge; Attend 1 - 2 lessons every week to improve teaching efficiency; actively ask other teachers for difficult questions; appropriately guide students to learn by themselves and cultivate their self-learning ability; design scenarios to let students take the initiative to obtain knowledge. At the same time, in the teaching arrangement of Zhenping County Xuefeng Middle School,'Steady-state and the environment' was divided into the first three units and the last three units. According to the regulations, the first three units were completed before the mid-term exam and the last three units were completed before the final exam. It was estimated that it would take one semester to complete the entire textbook. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The complete concept map of the high school biology compulsory two
The following is the content related to the concept map of the second chapter of the high school biology compulsory course: Chapter 1: The Discoveries of Genetic Genes - ** Core Concept **: - ** Important **: The law of gene separation, the law of free combination of genes, orthodoxy, reverse cross, cross, selfing, F1, F2, test cross, relative traits, trait separation, genetic factors. - ** Secondary **: Dominant trait, latent trait, dominant genetic factor, latent genetic factor, heterospore, homospore, gene type, manifestation type, hypothesis-deduction method. - ** Concepts of each section **: Including section 1 Mendel's pea cross-breeding experiment (1) and section 2 Mendel's pea cross-breeding experiment (2). ** Chapter 2: A Collection of Concepts of the Relationship between Genes and Chromosome ** - ** Core Concept **: - ** Important **: Meiosis, fertilisation, sperm, egg, first division of Meiosis, second division of Meiosis, allele, non-allele, homolog, non-homolog. - ** Secondary **: Testis, ovaries, sperm cells, oogonia, primary sperm cells, primary ovaries, secondary sperm cells, secondary ovaries, polar bodies, syndesis, and quadrants. - ** Concepts of each section **: Section 1 Meiosis and fertilisation, Section 2 Genes on the Chromosome, Section 3 Sex-linked Inheritance. The Essence of Genes, Concept Map Collection - ** Core Concept **: - ** Important **: DNA double spiral structure, DNA half-preserved replication, genes, genetic information, genetic effects, pneumococci experiment, bacteria infection experiment, base complementary pairing principle. - ** Secondary **: Base, adenine, thymine, uracil, and cystine; Isotopic tracing technique; density grads; uncoiling; the variety of DNA molecules; and the uniqueness of DNA molecules. - ** Concepts of each section **: Section 1: DNA is an important genetic material (including the transformation experiment of pneumococci and the experiment of bacteria infection); Section 2: The structure of DNA molecules; Section 3: The replication of DNA (including the experimental evidence of half-preserved replication of DNA (selection) and the process of DNA molecular replication); Section 4: Genes are DNA fragments with hereditary effects. ** Chapter 4: Gene Manifestation Concept Diagram Collection ** - ** Core Concept **: - [Important: Gene manifestation, translation, genetic code, Central Maxim, biological traits.] - ** Secondary **: Messenger (mR A), transfer (tR A), Ribosome (rR A), Codon, Anti-Codon. - ** Concepts of each section **: Section 1: Genes guide the synthesis of protein, Section 2: Genes control traits, Section 3: Deciphering the genetic code (Selections omitted). Gene Mutation and Other Mutation Concept Maps - ** Core Concept **: - ** Important **: Biological mutation, non-hereditary mutation, hereditary mutation, genetic mutation, genetic reorganization, genetic mutation, human genetic disease. - ** Secondary **: Repetition, loss, reversal, translocations, diploids, polyploids, genomes, haploids, monogeneic hereditary diseases, polygenic hereditary diseases, abnormal hereditary diseases, human genomes planning. - ** Concepts of each section **: Section 1 Gene Mutation and Gene Reassembly, Section 2 Chromatic Mutation, Section 3 Human Hereditary Disease. ** Chapter 6: From Crossbreeding to Genetic Engineering - ** Core Concept **: - [Important: Selection breeding, crossbreeding, mutation breeding, genetic engineering.] - ** Secondary **: Target Gene, Gene Carrier, Restriction Endonergy, DNA Ligase, Acceptor Cell. - ** Concept Map of Each Section **: Section 1: Crossbreeding and Mutation Breeding, Section 2: Genetic Engineering and its applications. ** Chapter 7: Modern Evolution Theory Concept Map Collection ** - ** Core Concept **: - [Important: Natural Selection Theory, Biological Evolution, Species, Biological Diversity, Populations, Genetic frequencies, Separation, Coevolution] - [Secondary: Use or discard, acquired inheritance, gene pool, over-reproduction, struggle for survival, genetic variation, survival of the fittest.] - Chapter 1: The Origin of Modern Biological Evolution Theory, Chapter 2: Important Information of Modern Biological Evolution Theory. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High school compulsory two biology knowledge points complete version
How to learn geography and biology in senior high school
For Grade Three geography studies: - In terms of basics, he had to lay a solid foundation, be clear about the content of the study, and be familiar with the textbooks. Because there was a lot of knowledge in geography that was closely related to the books, many students ignored the textbooks and only did the questions. It was difficult to improve their grades. At the same time, they had to improve their grades on the basis of being familiar with the textbook. They also had to pay attention to the map. The map ran through the entire knowledge of geography. Most of the geography questions were related to the map. Mastering the map was very helpful for improving their grades. - Thinking and analysis: Form a geographical way of thinking, learn to use principles, methods, and skills to solve new problems. You can learn from the mathematical way of thinking and build a map model in your mind to do questions. It was necessary to highlight the main knowledge, implement the foundation, pay attention to the overall grasp of the discipline system and the relationship between them, and improve the comprehensive analysis ability. Grasp the main content and focus on reviewing while consolidating the basic knowledge. - In terms of practice, he would carefully practice, carefully analyze the known conditions of the test questions during the process of doing the questions, find out the hidden knowledge, deeply understand the meaning of the questions, clarify the requirements, and then use the knowledge he had mastered to solve them. For Year Three Biology: - In terms of building a knowledge system, the establishment of a knowledge network, including the connection between the six basic characteristics of biology between the high school biology chapters (suitable for the general review stage), as well as the connection between the contents of each chapter (after learning each chapter), would help to systematically integrate scattered knowledge and deepen comprehensive understanding. - In terms of concept understanding, the basic concepts should be memorized on the basis of understanding, not memorized. - "Experimental skills: Biology is an experimental science. You can't just be satisfied with memorizing and operating experiments from books. You have to learn scientific thinking methods, be bold in questioning, and constantly study and summarize experiences in practice to improve your experimental ability. - In terms of study habits, he first had to cultivate interest, because interest could motivate him to spend time on this subject, which would make it easier for him to get high marks. Secondly, he had to listen carefully in class, which was very helpful for multiple-choice questions. Finally, he had to do the exercises seriously. An appropriate amount of practice was necessary, but he should not blindly do the exercises. He had to know how to choose. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>