High School Biology Knowledge Points, Simple Version
The following is a simplified version of the high school biology knowledge: - ** Cell and internal environment ** - Body fluids were divided into two parts: the cellular fluid (2/3) and the extra-cellular fluid. The outer cell fluid formed the internal environment. Blood cells lived in plasma, and most cells lived in tissue fluid. The internal environment was the medium for the exchange of substances between cells and the outside world. The steady-state included the stability of osmic pressure, ph, and temperature. The osmic pressure was related to the number of solute particles. The plasma osmic pressure was mainly related to the content of mineral salt and protein. The concentration of physiological salt was 0.9% NaCl. - Internal environmental stability was a necessary condition for normal life activities and was maintained by the neurohumoral immune regulation network. - ** Nervous regulation ** - Excitement was a process in which tissues or cells moved after being stimulated. The basic method of neuroregulation was reflex. The reflex arc was composed of a receptor, an impudent nerve, a nerve center, an efferent nerve, and an receptor. - The resting potential was the external positive and internal negative formed by K effluence, and the external negative and internal positive action potential formed by Na influx when stimulated. Excitement is transmitted bi-directional on nerve fibers and uni-directional between neurons (axons → cell bodies or tributaries). The neurotransmitter is released from the presynaptic membrane in the vesicle and acts on the postsynaptic membrane. The cerebral hemisphere had advanced functions such as perception, reflex control, language, learning, memory, and thinking. - ** Hormonal regulation ** - Hormonal regulation was regulated by the secretion of chemicals by the hormonal organs (or cells), and there was a feedback regulation mechanism. Hormonal regulation was featured by its high efficiency, fluid transport, and action on target organs and cells. Hormones were deactivated after they took effect, and they were information molecules. Phytohormones were micro-organic substances produced in plants and transported to the place of effect to affect growth and development. - ** Immune system ** - The immune system is composed of immune organs (bone marrow, spleen, and tonsil), immune cells, and immune active substances (antibodies, lysmokines, and lysomes). Its functions are defense, clearance, and monitoring. Non-specific immunity includes the first line of defense composed of skin and mucus membrane, and the second line of defense composed of antiseptic substances and engulfing cells. Read more exciting novels for free
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Complete version of biology high school knowledge points
High school biology knowledge was numerous and scattered, covering the following areas: 1. ** Material and structural basis of life **: Living organisms share the same material and structural basis. Except for viruses, living organisms are composed of cells, which are the basic units of structure and function. 2. Metabolism: Metabolism is the general term for all the orderly chemical changes in living cells. It is the foundation of life activities. 3. ** Reproduction and Development of Living Beings **: This includes the methods of reproduction and the process of individual development. 4. ** Life activity regulation **: For example, hormone regulation, nerve regulation, and other mechanisms that regulate the life activities of organisms. 5. ** Inheritance and Mutation **: It involves the transmission of hereditary substances, gene expression, gene mutation, gene reorganization, and aberrations. 6. [Origin of Life and Evolution of Living Beings]: Including the hypothesis of the origin of life and the theory of biological evolution. 7. ** Biology and the environment **: The relationship between organisms, organisms, and the organic environment. In the elective section, the knowledge points of Biology elective three were focused on genetic engineering, cell engineering, embryo engineering, and so on. These knowledge points needed to be systematically summarized and summarized to build a knowledge framework. They also needed to pay attention to the bold words and chapter summary in the textbook. Through special training and accurate brushing of questions, they could improve the accuracy of the questions to better grasp the high school biology knowledge. <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>
High school compulsory two biology knowledge points complete version
Junior high school biology glomerulus knowledge points summary
The following is a summary of the knowledge points related to glomeruli in junior high school biology: 1. ** In terms of structure ** - The glomerulus was a component of the nephrons, which were the basic units that formed urine. Each kidney was made up of more than one million nephrons. The glomerulus was formed by dozens of capillaries that were divided from the glomerular artery. The other end of the glomerular artery formed the glomerular artery. 2. ** Function ** - ** Filtrating effect **: During the formation of urine, the glomeruli and the walls of the kidney capsule play a role in filtering blood. Other than blood cells and large molecules of protein, all the plasma components could be filtered and formed into urine in the kidney vesicle. - ** Relationship with blood circulation (blood path)**: The kidney artery sends blood to the kidney, where the kidney artery → the glomerular capillaries (artery blood) → the glomerular capillaries (artery blood) → the glomerular capillaries (artery blood), and then the blood flows to the capillaries outside the kidney tubuli (artery blood, venous blood) → the kidney vein (venous blood). - ** Relationship with the formation and discharge of urine (urine)**: After being filtered by the glomeruli and the wall of the kidney vesicle, the original urine is formed in the kidney vesicle. The original urine is then reabsorbed by the kidney tubuli, and the rest forms urine. Finally, the urine is discharged from the body through the ureter, bladder, and uterus. 3. ** In terms of influencing factors ** - For example, when a man's blood serum level was 200 and his weight was 70 kilograms, the glomerular filtration rate of a 30-year-old person was 47, a 40-year-old person was 43, a 50-year-old person was 39, a 60-year-old person was 34, and a 70-year-old person was 29.9. The normal value of glomerular filtering rate was 90. The lower the value, the worse the kidney function. When the glomerular filtering rate was <30, it was severe kidney failure. 4. ** In terms of related diseases ** - Glomerulonepathy was a common kidney disease caused by glomerular damage caused by various reasons. Some or all of the symptoms of glomerular damage such as hematuria, proteinuria, edema, high blood pressure, decreased urine output or anuria, and abnormal kidney function would appear. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High school biology cell element knowledge points summary
1. ** Element classification ** - [Basic Element: C] - [Basic Elements: C, H, O, N] - ** Main Elements **: C, H, O, N, P, S. - ** Major Elements **: C, H, O, N, P, S, K, Ca2, M2, etc. - ** Trace elements **: Iron, Mn, Mn, Copper, B, Mo, etc. 2. [Elemental Source: Absorbed selectively from the natural world.] 3. ** Elements in cells are arranged in order ** - The order of the heavy elements was: O > C > H > N. - ** Dry heavy element order **: C>O>N>H. 4. ** Elemental status of different organisms ** - The types of chemical elements contained in different organisms were basically the same, but the content of the same element in different organisms was quite different. The content of different elements in the same organism was also different, which reflected the unity and difference of cells. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Guangdong High School Entrance Examination 2023 Biology Knowledge Points
High school biology knowledge points counterattack big summary
The study of biology in high school required scientific methods to construct a knowledge system and carry out effective revision. First of all, going back to the textbook was the basics. He had to focus on the bold words and the summary of the chapters in the textbook. He had to try to summarize the content and draw a mind map to build a knowledge framework to avoid missing knowledge points. For example, he could use books like " Basic Knowledge of High School Biology ", which could effectively help him sort out his knowledge. The first round would give him a complete knowledge system for him to memorize. In the second and third rounds, he could repeat the training in the form of filling in the blanks, which would help him improve steadily. Secondly, he would conduct specialized training. Using the real questions of the biology college entrance examination and the special practice questions of the test center to carry out targeted training to improve the accuracy and speed of the questions. In terms of knowledge, high school biology included the material and structural basis of life, metabolism, reproduction and development of living things, regulation of life activities, inheritance and variation, origin of life and evolution of living things, biology and the environment, and so on. The knowledge of these sections needed to be deeply understood and memorized. For example, the three major knowledge points of genetic engineering, cell engineering, and embryo engineering were also important. Materials like the Butterfly Transformation High School Biology Knowledge Points and Training were also helpful in improving grades. It contained all the knowledge points of high school biology and had been categorized in detail to make it easy to memorize. Moreover, each knowledge point had after-school training to consolidate it, and there were also explanations from famous teachers to help understand it. At the same time, the learning methods of some top students were also worth learning from. For example, the female top student in science in Hengzhong High School would sort out and summarize the basic knowledge points and check for missing areas that were easy to make mistakes. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Junior high school biology knowledge points, species variety
Species variety was an important component of biological variety. It was the most intuitive embodiment of biological variety and also the core of the concept of biological variety. The differences between individuals of different species reflected the variety of species. Biological species and species would affect the ecosystem. At the same time, the variety of genes determined the variety of species, and the essence of the variety of species was the variety of genes. China was one of the countries with the richest biological species. For example, the species of mosses, ferns, and seed plants in China were second only to Brazil and Colombia, ranking third in the world. China was also the country with the richest gymnosperm, known as the " hometown of gymnosperm." In terms of biological classification, organisms were divided into different levels of taxonomical units according to the degree of similarity between organisms. From large to small, they were kingdom, phylum, class, order, family, species, and species. Species was the basic unit of classification, and the same species had the closest kinship. The larger the taxon, the more species it contained, but the less similar the species were, the fewer common characteristics, and the farther the kinship was. The smaller the taxon, the fewer species it contained, and the more common characteristics, the closer the kinship was. The fundamental measure to protect the biological variety was to protect the habitat of living creatures and the variety of the ecosystem. The establishment of nature reserves was the most effective measure to protect the biological variety. It was of great significance to protect the species, genes, and ecological environment. It was conducive to the stability of the ecosystem and could also provide humans with more kinds of biological resources and scientific research materials. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Jiangsu Education Version Junior High School Biology Nucleus Structure Knowledge Points
The nucleus was one of the most prominent and important structures of a eukaryonic cell. It was usually spherical or oval in shape. Under the electron microscope, the nucleus was mainly composed of a nuclear membrane, a nucleus, and Chromatin. 1. Nuclear membrane: It is surrounded by the nucleus and is composed of two layers of membrane, separating the nucleus from the nucleus. There are also many kinds of membranes on the nuclear membrane. There were nuclear pores on the nuclear membrane. The nuclear pores were the channels for material exchange between the nucleus and the plasma. The exchange of protein and other biological molecules inside and outside the nucleus could not be separated from the nuclear pores. 2. Nucleus: A round or oval structure in the nucleus that is not surrounded by a membrane. In cells with high protein synthesis, there were often larger nuclei. 3. Chromatin: It is a dark-colored substance in the nucleus that is dyed by basic dye. It is mainly composed of DNA and protein. Chromatin was a thin and long silk. During cell division, it would undergo a high degree of coiling and other processes to form a chopstick. Chromatin and a chopstick were two forms of the same substance in the cell at different stages. A specific dye, methy-green pyronine, could be used for identification. The DNA was green and the DNA was red. The DNA was mainly distributed in the nucleus, while the DNA was mainly distributed in the plasma. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
High School Biology Gene Mutation Breeding Knowledge Points List
|knowledge points| particulars| |--|--| |The molecular mechanism of gene mutation| Genetic mutation can occur during amitosis, protocaryote fission, and viral DNA replication. Genetic mutation does not change the number of genes, but only the structure (from A→a or a→A, the essential difference between A and a is the change in the molecular structure of genes, namely the type, quantity, and order of the deoxynotides)| |gene mutation types| Dominant mutation (such as a→A, the mutation will show the trait); Recessive mutation (such as A→a, the mutant trait can be stably inherited after it is shown)| |The effect of gene mutation on traits| Change biological traits (mutation causes changes in codons, causing changes in protein functions, such as sickle cell leukemia); do not change biological traits (Soma cell genes may not change in reproductive cells, parent DNA base pair changes will produce hidden genes that are passed on to offspring, and the hidden traits will not appear when the offspring are mixed. Codon degeneracy may translate into the same aa, traits are affected by genes and environment, and in some environments, genetic changes will not appear.)| |The pros and cons of genetic mutation| The pros and cons depend on the living environment, and some are both harmless and useless.| |The probability of genetic mutation in cells| Germinal cells> Soma cells, cells with vigorous division> cells that have stopped dividing| |Requirements for Mutation Breeding Materials| Materials that can undergo cell division (such as germinated seeds, mice, etc.) meet the requirements, while materials that do not undergo cell division (such as dried seeds, animal sperm, etc.) do not meet the requirements.| |Genetic Reassembly| In the narrow sense, gene reorganization refers to the free combination of non-allelic genes on non-homological embryos and the cross-exchange of non-sister chromatids on homological embryos during the process of Meiosis. In the broad sense, it also includes genetic material changes caused by genetic engineering and plant somatic-cell hybrids. The different causes of B and B in the picture include gene mutation (interphase) or cross-exchange (prophase). When asking the root cause, consider gene mutation. If there is a hint of division, judge according to the hint.| |Comparisons of Chromatic Mutations and Other Mutations| (Not explicitly mentioned in comparison, temporarily omitted)| |Comparisons of Common Breeding Methods| (Not explicitly mentioned in comparison, temporarily omitted)| |Selection of breeding methods| Mutation breeding can produce new genes, but cross-breeding cannot, but it can realize gene reassembly. The simplest and most conventional breeding method is cross-breeding. Cross-breeding is used to concentrate the good traits of two parents; Haploids are used for rapid breeding; Mutation breeding is used to greatly improve varieties; Polyploids are used to increase yield and nutrient content; The time of cross-breeding is F2; There are differences in the method of obtaining pure mutants in animal and plant cross-breeding (self-breeding in plants and test-crossing in animals).| |Human genetic diseases| It can be judged by the typical chart. The pedigree chart can be used to determine whether it is inherited with Y (if the patient is all male, it may be inherited with Y)(Other judgment contents are not completely mentioned, temporarily omitted)| <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>