High school biology elective 3, must be able to memorize the knowledge
The following are some of the questions that might be necessary for high school biology elective 3: ** 1. Genetic engineering ** 1. The basic operation procedure of genetic engineering mainly included four steps: ______ 2. The principle of the technique is_____. The reaction process includes three cycles of____,_____, and_____. 3. The construction of gene expression carriers was the core of genetic engineering. A complete gene expression carrier included the target gene,_____,_____,_____, and so on. ** 2. Cell engineering ** 1. The principle of plant tissue culture technology is_____, and the process includes____,____,_____, and transplanting cultivation. 2. The commonly used technical methods for animal cell engineering included animal cell culture,____,____,____, and so on. During animal cell culture, the tissue blocks need to be treated with______ 3. In the preparation process of the monoclonals, two major cell engineering technologies were used. ** 3. Embryo engineering ** 1. Embryo engineering included in vitro-fertilisation,_____,____,____, and other techniques. 2. The process of in vitro-fertilisation included the collection and cultivation of____, the collection and capitation of____, and fertilisation. 3. The physiological basis of embryo transfer includes: the physiological changes of the donor and the recipient are the same; the early embryo is in the_____state; the recipient basically does not react to the foreign embryo transferred into the uterus. ** 4. Safety and ethical issues of biotechnology ** 1. The safety of genetically modified organisms is mainly reflected in three aspects: _____safety,_____safety, and_______safety. 2. The ethical issues involved in cloning technology included whether it violated the concept of human beings and whether it would impact existing relationships. Read more exciting novels for free
How to quickly memorize high school biology knowledge
Here are some ways to quickly memorize high school biology knowledge: 1. ** Simple memorization method **: By analyzing the teaching materials to find the main points, the knowledge is simplified into a few regular words to help memorization. 2. [Comparing and categorizing memorization method: After learning a piece of knowledge, summarize and summarize it. Using the connections between the various knowledge points as clues, construct a knowledge network and form a knowledge system.] For example, the function of the hypohedron was summarized. It was the central regulation of the nervous system, including the central regulation of body temperature, the central regulation of water and salt balance, the central regulation of blood sugar, and the control of biological rhythms. It also had the function of secreting hormones, such as the synthesis and secretion of certain hormone releasing hormones and the synthesis of antidiuretical hormones. Through this summary, it could be better remembered. 3. ** Homophonic Memory Method **: Condense some knowledge points with homophonic words and string them into an interesting sentence or a commonly used word to help remember. For example, organisms that belong to the class of blue-green algae include blue-colored (blue algae) monastic (Nostoc), which can produce (Nostoc) tremors (Oscillatoria). 4. [Associate Memory Method]: Memory biological knowledge through association of related things or scenes. 5. [Mind Map Method: It can connect the knowledge points of high school biology in a scientific way, which is beneficial to strengthen the understanding and extension of the knowledge points.] 6. [Shuo Wen Jie Zi Memory Method: Many biological terms can be grasped by memorizing the meaning of the word.] For example, a procaryotic cell is a cell with a primitive nucleus, and a eukaryotic cell is a cell with a true nucleus. 7. [Understanding Memory Method: Memory based on understanding the material.] In the learning process, the main focus was on meaningful memory, supplemented by mechanical memory. For biological theoretical knowledge, one had to first understand it thoroughly, then process and organize the complex problems into simple forms that were easy to remember. For example, the expression of genes included two processes: translation and replication. To understand replication was to convert the genetic information in DNA into a form of recording, while translation was to translate one sequence into another, so that one could remember it better. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Biology elective, a must-memorize knowledge point encyclopedia, PEP edition
The following are some of the must-memorize knowledge points for the Biology elective 1 of the People's Education Version: 1. **DNA related knowledge ** - ** Dissolution **: DNA and protein have different dissolutes in different concentration of NaCl-based solutions. This feature can be used to separate DNA from impurities. DNA is not dissolved in alcohol solution, but some protein is dissolved in alcohol, which can further separate DNA and protein. - ** Resistance to acids, high temperatures, and deterrents **: The protein has no effect on DNA. Most protein cannot withstand high temperatures of 60 - 80°C, while DNA will only denature above 80°C. The deterrents can disintegrate the cell membrane, but it does not affect DNA. - ** Identification **: Under the conditions of boiling water bath, DNA will be dyed blue when it comes into contact with diamines. diamines can be used as a reagent for DNA identification. - **DNA extraction and identification of experimental materials **: Biological materials containing DNA are acceptable, but biological tissues with relatively high DNA content are better. - ** Disrupting cells to obtain the Dna-containing fluid (chicken blood cells and plant cells as examples)** - Chicken blood cells: Distilled water was added to the chicken blood cell fluid, stirred with a glass rod, and filtered to obtain the filtered fluid. Distilled water was a hypotonic liquid for chicken blood cells. A large amount of water entered the blood cells and caused them to burst. Stirring accelerated the rupture and released DNA. - Plant cells (taking onions as an example): Add the washing agent and salt to the chopped onions, stir and grind them thoroughly, and then filter them to obtain the grinding liquid. The washing agent dissolved the cell membrane, which was conducive to the release of DNA, while salt (NaCl2) was conducive to the dissolution of DNA. If the grinding was insufficient, the DNA in the nucleus would not be completely released, which would affect the results of the experiment. The filtered liquid of this step may contain impurities such as protein, glycan, and R A. - ** Removing impurities in the filtered solution **: There are three methods: one is to use the different dissolutes of DNA in different concentration of NaCl-solution; the second is to use a protein to decompose the protein but not the DNA; the third is to use the different denature temperatures of the protein and DNA. - **DNA extraction and identification procedures (onion as an example)** - Weigh 30 grams of chopped onions, add a small amount of Quartz sand to aid grinding, pour 10mL of 2-mole/L solution of NaCl3 and grind them thoroughly (onions can be treated first to reduce irritation). The purpose of grinding is to break the cells and let the DNA dissolve in the NaCl3 solution. There is no need to grind them into a porridge paste, and you can't use a whisk. - After grinding, it was filtered with a funnel and gauze to obtain the filtered liquid. - Add 20ml of 95% alcohol solution to the filtered solution (pour it slowly along the beaker wall without shaking or stirring). The upper layer of the solution will separate out a white, fibre-like viscous substance (DNA), which can be gently rolled up with a glass rod. 2. ** Traditional fermentation technology ** - ** Fruit wine making ** - ** Principle **: Yeast's anoxide-free breathing, the reaction formula is C6H12O6 → 2C2H50H +2CO2 + energy. - ** Source **: Wild yeast attached to grape skin or artificially cultivated yeast. - ** Condition **: 18 - 25 ° C, sealed, venting (CO2) at intervals. - ** Detection **: Under acidic conditions, the reaction between the alcohol and the potassium bichromate is grayish-green. - ** Fruit vinegar production ** - [Principle: Aerobic Breathing of Acetic Acid bacteria.] When O2 and sugar source were sufficient, sugar would be decomposed into vinegar; when O2 was sufficient and sugar source was insufficient, alcohol would be transformed into jumped and then into vinegar. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Biology elective course 2: Knowledge Points
Biology elective second year of high school chapter 1 knowledge points: - Research and application of the reagent: - Pectinase: It breaks down pectins and dissects the cell wall and intercellular layer of plants, which helps to increase the juice yield of fruits and make the juice clear. Pectinase was not an type of an ester. It included polygallouronases, pectinases, pectinases, and pectinesterases. - The activity of the reagent could be expressed by the reduction of the reagent or the increase of the product in a unit of time and volume. - Control of plant pests and animal diseases: - Control policy: prevention first, comprehensive control. - Comprehensive control methods for crop pests and diseases: - Investigation of pests and diseases: According to the purpose, requirements and targets of the investigation, it can be divided into basic situation investigation, fixed-point system investigation and pest control effect investigation. The investigation was generally carried out in the form of a sample. The sample methods included chessboard, diagonal, straight, Z, and so on. There were concepts such as disease incidence rate (preliminary understanding of the harm situation), insect population reduction rate (understanding the effect after prevention and treatment), etc. The prediction of plant pests and diseases was based on the analysis and judgment of the data obtained from observation and investigation. It calculated the occurrence period, occurrence quantity, and damage degree of the pests and diseases, and issued early warnings in time for prevention and control. - Plant quarantine: The purpose is to prevent the spread of dangerous pests and weeds. The quarantine targets were seeds, seedlings, and agricultural products, including international quarantine and domestic quarantine. - Agricultural control: Take measures such as the selection of resistant varieties (such as insect-resistant tobacco), the formulation of reasonable farming systems (such as reducing the amount of pesticide used), and the establishment of scientific fertilizer and water management to directly or indirectly eliminate or suppress the occurrence and harm of diseases, insects, and weeds. Biology elective second year of high school, knowledge points: - Cell cycle and mitosis: The cell is the basic unit of an organism, and its normal growth and development requires a series of life cycles. The cell cycle referred to the entire process of cells starting from one mitosis to the next mitosis. It was mainly divided into four stages. - G1 phase (growth phase): During this period, cells grow and synthesize the required protein and organelle. - S phase (DNA replication phase): During this period, cells replicate the DNA in their genomes, ensuring that each daughter cell has complete genetic information. - G2 phase (prophase): During this period, cells grow further and are ready to enter mitosis. - M stage (mitosis stage): During this period, cells undergo mitosis, including the formation of the Spindle, nuclear division, and cell division. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What if high school biology is difficult to memorize?
If you find high school biology difficult to memorize, you can try the following methods: 1. ** Mnemonic Formula Memory Method **: For knowledge points with multiple contents, choose one or two words from each phrase to form a smooth and meaningful sentence. By remembering the sentence, you can remember this string of knowledge points. You can also create a suitable mnemonic formula for yourself. 2. ** Homophonic Association Method **: If a knowledge point is related to a number, it can be associated with the homophonic pronunciation of the number and bound to the corresponding object. When you see an object, you can associate it with a number. It can also be used to associate other biological knowledge points to consolidate your memory. 3. ** Illustrating Memory Method **: When memorizing abstract and obscure knowledge, if you have difficulty understanding and memorizing, you can find examples in your life that reflect the knowledge and complete the memorization through examples. 4. [Recite the content clearly: Understand the concepts in biological knowledge, such as gene mutation, aberrations, etc.; understand the nature, such as the function of lysomes, etc.; understand the experimental conclusions, such as the reason for Mendel's success, etc., and then memorize them.] 5. ** The importance of memorization is recognized **: By understanding the relationship between the knowledge points and the test questions, the content that must be memorized is clearly defined. After knowing the importance of memorization, take the initiative to memorize. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to memorize high school biology to learn it well?
Here are some ways to learn biology well by memorizing high school biology: 1. [Mind Map Method: Connecting biological knowledge points in a scientific manner and constructing a mind map. This helps to strengthen the understanding and extension of knowledge points. At the same time, it can sort out the framework of knowledge and facilitate memorization.] 2. ** simplified memorization method **: analyze the biology teaching materials to find the main points and simplify the knowledge into a few regular words. For example, the molecular structure of DNA could be simplified as "five four three two one"(five basic elements, four basic units, each unit has three basic substances, and many units form two DNA strands, forming a regular double spiral structure). 3. ** Association Memory Method **: Use the contents of the biology subject to make a clever association. For example, when recording the composition of blood plasma, it could be related to the food in the kitchen (water, egg, which was protein, sugar, which was glucose, and salt, which was an mineral salt). 4. ** Comparatively memorizing method **: For similar terms that are easily confused, you can compare them in terms of scope, meaning, extension, and text to find out the differences. For example, assimilation and assimilation, and the difference between oxygen and oxygen breathing. He could remember through this sharp contrast. 5. ** Syllable Mnemonic Method **: Refine the core content or keywords of complex knowledge as an outline. For example, in the metabolism of higher animals, no matter what kind of organic matter it was, it would generally go through five processes: digestion, absorption, transportation, utilization, and secretion. Grasping the outline would help in memorizing. 6. ** Diffraction Memory Method **: With a certain core knowledge as the center (such as cells), connect as many other related knowledge as possible. It can be used for chapter summary or review. 7. ** Mnemonic Method **: It is suitable for memorizing knowledge points with multiple content. Choose one or two words from each phrase to form a smooth and meaningful sentence. After memorizing this sentence, you can remember this string of knowledge points. 8. ** Homonym Association Method **: It is suitable for knowledge points related to numbers. It is based on the homonym of the pronunciation of the number and is bound to the corresponding object. When you see an object, you can associate it with a number. 9. ** Illustrating Method **: If you have difficulty understanding a certain knowledge point, the teacher or you can give a familiar example to help you quickly understand and remember the knowledge point. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Basic knowledge of high school biology exam
The basic knowledge of high school biology covered many aspects: 1. ** Cell related **: The cell is the basic unit of life activity, and cells are diverse and unified. This included understanding the structure, function, and characteristics of different types of cells. 2. [Elements and compounds in cells]: To identify the types of elements contained in cells, such as macro and trace elements, as well as the structure, function, and characteristics of various compounds, such as sugar, fat, water, and mineral salt. 3. ** The minerals in the cells **: mainly water and minerals. You must master their form of existence and role in the cells. For example, water had many functions in cells, including being a good solution and participating in chemical reactions. 4. ** Carboids and Lipids **: Understand the types of sugar (Monosomes, Disomes, and Polymers) and their functions. For example, glucose is the main energy material needed for cell life activities; Lipids include fats, lysomes, and steroids. Different fats have different functions. For example, fats are good energy storage substances in cells. High school biology had a total of 88 basic knowledge points. Most of the biology questions were relatively simple, and about 80% of them were knowledge points that were often tested. There were not many basic points in the overall examination. He needed to systematically comb through each chapter and summarize his mastery of these basic points. Then, he needed to practice the basic questions to master them. He could also strengthen his memory of the basic knowledge by constructing a knowledge network (such as mind map method, triple knowledge network map, etc.), as well as by digging out and writing from memory. At the same time, he had to pay attention to the use of color to mark the common test points and difficult points so that he could quickly memorize the key questions. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
300 high school biology knowledge points summary
The following is a summary of some high school biology knowledge points: 1. The relationship between chemical elements and organisms: organisms contain a variety of chemical elements. These elements have different functions and effects in the body, such as forming compounds and participating in physiological processes. 2. The list of compounds in the cell: There are many kinds of compounds in the cell, such as sugar, fat, protein, and nuclear acid. Each of them has different structures and functions. For example, sugar is the main energy material, fat can store energy, and so on. 3. Nucleic acid was divided into DNA and DNA, and its basic units were respectively, DNA and DNA. 4. Identification of reducing sugar, fat, protein, and DNA in biological tissues: Use specific reagents for identification. For example, Fehling's reagent can identify reducing sugar and produce brick-red precipitations; Sultan III dye solution can identify fat and produce orange color, etc. 5. The characteristic of the membrane was that it was selectively pervious, allowing certain substances to pass through while preventing other substances from passing through. 6. The cell membrane's substance exchange function: The cell membrane can carry out substance exchange through free dispersion, assisted dispersion, active transportation, and other methods. 7. The similarities between mitochondria and plastids were that they both had a double-layered membrane structure, were related to energy conversion, and contained a small amount of DNA. 8. The comparison of eukaryote organelle: Different organelle had differences in structure and function. For example, the ER was the synthesis, processing, and transportation channel of protein and other molecular substances; the Golgi apparatus mainly processed, classified, and packaged the protein from the ER. 9. During mitosis, the changes of nuclear DNA, the nuclei of the nuclei, and the nuclei of the nuclei were as follows: during the interphase, DNA replication and the synthesis of related protein were carried out, and the DNA content was doubled; during the prophase of mitosis, the nuclei of the nuclei appeared, and at the anaphase, the nuclei of the nuclei split, and the sister Chromatids separated. 10. The source of ATP-in the body: It is mainly produced by cell breathing (both oxygen and oxygen free breathing) and photosynthesis. 11. [The destination of the ATP-binding in the body: It is used for various life activities of cells, such as muscle contraction and material synthesis.] 12. The comparison between light reaction and dark reaction in photosynthesis: the light reaction occurs on the thylakoid membrane of the plastids, producing oxygen, bound bound 13. The relationship between light energy utilization rate and photosynthesis efficiency: Light energy utilization rate refers to the ratio of the energy contained in the organic matter accumulated by the plant's photosynthesis to the sunlight energy that shines on the ground; photosynthesis efficiency refers to the ratio of the energy contained in the organic matter produced by green plants through photosynthesis to the light energy absorbed during photosynthesis. 14. The relationship between the external factors that affect photosynthesis and the improvement of light energy utilization: The external factors include light intensity, temperature, carbon dioxide concentration, etc., and appropriately increasing the value of these factors can improve the light energy utilization. 15. The metabolism of the three major nutrients in humans and animals: sugar, fat, and protein can be synthesized and decomposed in the body, and they can be converted to each other. 16. The comparison between the two types of breathing: Aerobic breathing produces a large amount of energy and requires oxygen to participate. The reaction site is mainly the mitochondria. The anoxia-less breathing produces a small amount of energy and does not require oxygen. The reaction site is the cellular matrix. In addition, there were also knowledge points about cell structure and function, gene expression, genetic laws, biological evolution, ecological systems, etc., such as cell membrane system, gene translation and translation process, Mendel's law of inheritance, modern biological evolution theory, etc.(Genetic frequency changes, isolation and speciation, etc.), the components of the ecosystem (producers, consumers, disposers, non-biological substances and energy), energy flow (one-way flow, step-by-step reduction), material circulation, and many other topics. These knowledge points were all important parts of high school biology learning, but due to space constraints, it was difficult to list all 300. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
500 examples of high school biology general knowledge
High school biology fragmented knowledge summary
Biology elective course two key points of knowledge summary
Except for a few organisms such as viruses, all organisms were composed of cells. The cell was the basic unit of the structure and function of the organism. The chemical composition of the virus was DNA and protein or R A and protein. I. Eukaryotic cell structure and function 1. ** Cell wall **: There is a cell wall outside the cell membrane of plant cells. The main components are starch and pectins, which can be removed by cellases and pectinases. It is used for support and protection. 2. ** Cell membrane **: It is mainly composed of fat (Phospholide) molecules and protein molecules. There is also a small amount of sugar. Among the fat, Phospholide is the most abundant. Its functions included separating cells from the external environment, controlling the entry and exit of substances into cells, and communicating information between cells. 3. * * - ** Cell matrix **: It contains water, mineral salt, fat, sugar, ammo acid, and many other types of acids. Many chemical reactions are carried out here. - ** Cell organ ** - ** mitochondria **: The main place for oxygen breathing, known as the "power workshop". It is composed of a double-layered membrane. The inner membrane folds inward to form a ridge, increasing the membrane area. There are a variety of microorganisms and a small amount of DNA related to oxygen breathing. - <strong></strong></strong><strong></strong>& - ** ER **: A network structure formed by the connection of single membranes. It increases the membrane area inside the cell. It is related to the synthesis and processing of protein in the cell. It is also the "workshop" for the synthesis of fats. - ** Ribosome **: Granular body, part of which is attached to the plasmatic reticule, while the other part is free in the plasma. It is the place where protein is synthesized. - ** Golgi apparatus **: It cannot synthesize protein, but it can process, classify, and package protein. Plant cell division is related to the formation of cell walls. - ** Vacuum **: Mature plant cells have a vesicle. The vesicle contains cell fluid, which contains substances such as sugar, mineral salt, coloring matter, and protein. It can regulate the cell's internal environment and maintain the cell's shape and expansion. - ** Centrosome **: Animal cells and lower plant cells have a centrosome. Each centrosome is composed of two vertically arranged centric granules and their surrounding materials. The centrosome of animal cells is related to mitosis. - Lysosome: An organelle with a single-layered membrane structure. It contains a variety of lysomes and can break down a variety of substances. 4. ** Nucleus **: - Its structure included the nuclear membrane (a double-layered membrane with a nuclear pore on the membrane, which was the channel for the exchange of substances and information between the nucleus and the plasma), the nucleus (the shape and number of different organisms were different, and it would disappear and reappear periodically during cell division), and Chromatin. Some cells have more than two nuclei, while others have no nuclei (such as the red blood cells of a mammalia). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>