Biology, protein, explanation
The following is an explanation of protein in high school biology: ** I. Basic Concepts of Genes ** 1. ** Elements ** - A protein was composed of carbon, hydrogen, oxygen, and nitrogen. It also contained elements such as phosphorous, sulfur, iron, and copper. All the protein contained N, and the nitrogen content of each protein was very similar, with an average of 16%. According to the protein coefficient, every 1gN in any biological sample meant that there was about 10.0/16 = 6.25g of protein. 2. ** Basic Unit-Acid ** - The basic unit that makes up a protein is the amine acid. 3. ** Formation of protein-dehydration condensation ** - The main way for the protein to be formed by the condensation of the protein was by dehydration. In this process, the carbon atoms of one of the two groups were linked to the carbon atoms of another group, and a water atom was removed. A compound formed by the condensation of two molecules is called a dipeptide, and a compound formed by the condensation of multiple molecules is called a Peptide. The chemical bond that connects the two molecules of the same acid is called the peptidic bond. ** II. Calculation of the molecular weight of the protein ** - Assuming that the average molecular weight of an aa is a and the number of aa is n, the molecular weight of the formed protein is a×n - 18(n-m), which is the total molecular weight of aa minus the total amount of water molecules removed. ** 3. Diverse protein structure ** 1. ** Diverse reasons ** - There were two main reasons for its variety. The first was that the types, numbers, and order of the protein's components were different, and the second was that the folding and coiling of the protein chain and the spatial structure of the protein varied greatly. 2. ** Function Diverse ** - The diverse structure of a protein determines the diverse functions of the protein. It has a function of catalyze, structure, transport, information transmission, immunity, and so on. ** 4. The amount of protein in cells ** - The protein was the most abundant organic matter in the cells, accounting for more than 50% of the dry weight of the cells and 7% - 10% of the fresh weight of the cells. ** 5. Relationship between protein and gene expression (Gene guides the synthesis of protein)** 1. ** Transcription ** - This process was carried out in the nucleus (it could also be transcribed in the plastids and mitochondria). It was a process of synthesizing the messenger messenger acid using a strand of DNA (transcribed in units of genes) as a template according to the principle of base complementation. The conditions included a template (a strand of DNA), raw materials (four kinds of Ribonitides), energy (Ang P), and an electron capture reagent (an electron capture reagent). The products were messenger, Ribosome, and transfer. 2. ** Translate ** - It was carried out on the Ribosome in the cell's plasma. It was the process of synthesizing a protein with a certain sequence of the protein's sequences using the protein's DNA as a template. The three adjacent bases on the messenger acid code for an aa, and these three bases are called codons. Terra was the carrier of the protein, and it could recognize the codons of the protein. Each terra could only recognize and transport one type of protein. A single strand of mR A could combine with multiple Ribosomes, so that a small number of mR A molecules could quickly synthesize a large number of protein. Read more exciting novels for free
What is novel protein biology?
Novel protein biology refers to the study of new or previously uncharacterized proteins and their functions and roles in living organisms.
Separation of high school biology protein and DNA
In high school biology, the following methods could be used to separate protein and DNA: 1. ** Using the different dissolutes of DNA and protein in different concentration of NaCl-based solutions **: - Using a solution with high salt concentration to dissolve DNA could remove impurities that could not be dissolved in high salt, and using a solution with low salt concentration to separate DNA could remove impurities that were dissolved in a solution with low salt concentration. By repeatedly dissolving and separating the DNA, it was possible to remove various impurities that were different from the DNA's dissolution, thereby separating the DNA from the protein. 2. ** Using proteases to break down protein **: - The protein could be broken down by the protein, but it had no effect on the DNA. Using this characteristic, he could use a protein to break down the impurity protein, thereby separating the extracted DNA from the protein. 3. ** Using the difference in high temperature tolerance between DNA and protein: - Most protein cannot withstand high temperatures of 60 - 80°C, while DNA will only denature above 80°C. This difference could be used to denature the protein and separate it from the DNA. 4. ** Dialysis Method **: - Dialytic separation of protein was based on the principle that small molecules could pass through the semi-transparent membrane, while large molecules such as protein could not pass through, so as to achieve the separation of protein and DNA. 5. ** organic phase settling method (such as in some methods of extracting DNA, R A, and protein from cells or tissues at the same time)**: - The cells were lysed with a single-phase solution of guanidinium thioguanide and phenol, and then a second (organic) phase was produced by adding choroform, so that DNA and protein were extracted. Then, the DNA and protein in the organic phase could be separated by successively precipitating with alcohol and then alcohol. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What does the level of protein biology mainly depend on?
The biological activity of a protein mainly depended on its structure, including the primary structure (the sequence of the protein) and the higher-order structure (such as the secondary structure of the alpha helices and beta sheets, the overall structure of the tertiary structure, and the combination of the tertiary structure of the tertiary structure). From the perspective of the sequence of the protein, the different sequences of the protein determined the properties of the protein. For example, the properties of the side chain groups of the protein (polar, non-polar, acidic, basic, etc.) affected the properties of the protein, such as its dissolution and charge, thus affecting its function and activity in the body. In terms of high-level structure, the correct folding was crucial for the function of the protein. If the folded structure of the protein is destroyed (such as degeneration), its biological activity is often lost. For example, some physical factors (high temperature, high pressure, violet light, etc.) and chemical factors (strong acid, strong base, heavy metal ions, etc.) could destroy the advanced structure of the protein and affect its activity. In addition, the interaction ability of a protein with other molecules (such as substances, cofactors, and regulating protein) also affects its biological activity. For example, the specific binding ability of an protein to a substance depended on the structure of its active center and the composition of its aa. The strength of this binding ability was directly related to the efficiency of the catalyze reaction, which was also the level of its biological activity. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
2017 Biology Biology Middle School Entrance Examination Explanation and Training Answer
2017 Biology Biology Middle School Entrance Examination Explanation and Training Answer: 1 A Cell structure and function B Cell division and genetics C Gene regulation and expression D Genetic variation and evolution 2. A. The variety of the ecosystem. B. The protection of the biological variety. C. The value of the biological variety. D. The general law of biological evolution. 3. A. Food chain and ecosystem level B. Function and stability of the ecosystem C. Species in the ecosystem D. Damage and impact of humans on the ecosystem 4. A. Cell death and tumor treatment B. Genetic variation and genetic engineering C. Bioethics and biotechnology D. Gene editing and human cloning 5. A. The protection and utilization of biological diversityB. The stability and sustaining of the ecosystem C. Species extinction and ecological disasters D. Humanity's ecological responsibility and sustainable development The answers are for reference only.
Second Grade Biology textbook video explanation
The video explanation of the biology textbook for the second grade could be obtained from many sources. For example, on some online education platforms, there might be video courses that teachers explained according to the contents of the teaching materials. These courses were usually produced by teachers from famous schools. They would focus on the error-prone points, difficult points, and high-frequency test points in the teaching materials, and help students check their shortcomings in the form of typical questions to quickly raise their scores. In addition, video platforms such as TikTok also had videos explaining the contents of the biology textbook for the second year of junior high school. For example, the second volume of the Jinan version of the eighth grade biology "Evidence of Biological Evolution" had an interesting animated video to explain, vivid and easy to understand, including the key and difficult points of each chapter in the textbook. There was also a review video for the Beijing Normal University version of the 8th grade biology " The classification of living things." These videos would refine the difficult points, record the test points, and sort out the knowledge to help the students improve their marks quickly. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Eighth grade biology laboratory video explanation teaching content
There were many experiments in biology in the eighth grade of junior high school. Different experiments had different teaching purposes and knowledge points. For example, the experiment of " Observing the structure of leaves " was mainly to let students have an intuitive understanding of the structure of leaves. The experiment of " Observing earthworms " helped students understand the characteristics of annelids. The experiment of " Observing bivalve " helped students master the relevant knowledge of mollusks. The experiment of " Observing arthropods " was to familiarize students with the characteristics of arthropods. The experiment of " Observing Crucian Carps " could deepen students 'understanding of fish. The experiment of " Observing frogs " was beneficial to understanding amputans." The structural characteristics of birds suitable for flight " experiment could help students understand the structural advantages of birds in flight;" Observing the movement of animal bones and joints " experiment was about the exploration of animal movement-related knowledge;" Learning behavior of mice to walk a maze to get food " experiment was helpful to understand animal learning behavior;" Detection of bacteria and fungi in different environments " experiment was to teach the distribution of bacteria and fungi. The experiment of "observing yeast and mold" could help students master the knowledge related to fungi. The experiments such as "making spore prints","fermentation phenomenon" and "making rice wine" were also teaching contents related to microorganisms. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Is the protein protein a health supplement?
Most of them were health foods. The protein in the human body was called protein. It was a protein in the human blood plasma. It could maintain the blood plasma's osmolarity and increase the blood volume. It could also provide the blood with an important component of balancing the protein in the blood. It was an indispensable nutrient for the human body. Most of the common protein and protein drinks on the market are health foods, which can be used as a way to supplement protein and nutritional support. However, caution should be used when selecting and using them, and personal health conditions and medical advice should be considered. The novel " Watching the Moon on Fish Island " is equally exciting. Everyone is welcome to click and read it!
What is the role of the protein protein
The protein had many functions, including the following: - In terms of immunity, it can increase the blood plasma osmole, improve the function of immune tissues, enhance immunity, improve the reproductive ability and activity of immune cells, help maintain the health of the human immune system, and enhance the body's resistance. - In terms of nutrition, it is a highly effective and safe nutrient that can replace protein to carry out a series of physiological activities. It has a high biological value and contains 20 kinds of aa, which helps to supplement the protein and protein needed by the human body. - In terms of digestive system, it can be well absorbed by the digestive tract, promote gastric and intestine wriggling, and effectively relieve abdominal distension, belching and other indigestion symptoms. - In terms of calcium absorption, it could assist in the absorption of calcium and enhance the effect of bone blasts, preventing bone loss to a certain extent. - In terms of blood circulation, it could increase the user's oxygen metabolism level, enhance blood circulation, and improve blood circulation. - In terms of beauty, it could improve blood circulation, promote skin metabolism, and have the effect of embellishing skin and maintaining beauty. - In terms of regulating the secretion, it could regulate the secretion system. - In terms of physical recovery, it was suitable for people with weak constitutions and was helpful in the recovery of the body and the regulation of physiological functions. For patients who were recovering from surgery or disease, it could promote wound healing and tissue repair. For people who were lacking in oxygen or poor blood circulation, it could help improve the situation of lack of oxygen and poor blood circulation. - In terms of relieving stress and improving mental state, it can help people relieve stress, improve sleep quality, and improve mental state. The novel " Watching the Moon on Fish Island " is equally exciting. Everyone is welcome to click and read it!
The opsonizing reaction of the protein protein
If the patient has an allergic constitution and is allergic to the protein, it may induce an allergic reaction after use, causing symptoms such as itchy skin, redness, swelling, and even difficulty breathing. If you don't follow the doctor's advice and take the medicine on time, it may stimulate the stomach and intestines, causing discomfort such as loss of appetite, abdominal distension, and abdominal pain. Since the protein was mainly digested by the liver and kidneys, excessive use would increase the burden on the liver and kidneys. The kidneys might have oliguria, anuria, lumbago and other symptoms. The liver might have loss of appetite, abdominal distension, abdominal pain, yellow skin, nausea and other symptoms. It might also lead to increased burden on the heart, chest tightness, short breath and other discomfort. The novel " Watching the Moon on Fish Island " is equally exciting. Everyone is welcome to click and read it!
Junior high school biology research questions and answers detailed explanation
The following are some examples of questions and answers related to junior high school biology research: * * I. Research on the effects of alcoholism on the human body ** 1. [Question: How does alcohol affect the nervous system?] - Alcohol can seriously damage a person's nervous system. The central nervous system includes the brain and spinal cord, and the brain is composed of the cerebrum, cerebrum, and brainstem. When drinking too much, alcohol would poison the cerebrum, causing damage to the cerebrum's ability to maintain body balance and accurate coordination of movements, resulting in instability in walking. Alcohol would poison the language center of the cerebral hemisphere, causing speech to be unclear. It would poison the visual center, causing hallucinations. In severe cases, the entire nerve center would be poisoned, causing confusion, loss of consciousness, and lethargy. For example, when studying the effects of alcohol on the driver, there might be a loss of coordination and accuracy of hand and foot movements, which might be caused by alcohol anesthetizing the cerebrum. 2. [Question: How does alcohol affect the heart rate of the water fleas?] - * * Explanation of the answer **: Assuming that the alcohol concentration has an effect on the heart rate of the water fleas, the experimental variable is the alcohol concentration. In the experiment, as the volume fraction of alcohol increased, for example, when the volume fraction of alcohol was 5%, 10%, 15%, and 20%, the corresponding heart rate of the Daphnia was 24, 21, 17, and 0 (death) respectively, indicating that the heart rate of the Daphnia gradually decreased until death. This also meant that alcohol abuse would cause the central nervous system to be overly excited, causing alcoholism. Alcohol abuse in pregnant women could also cause fetal development disorder or low intelligence, and even cause fetal deformities. At the same time, in order to show the effect of alcohol, a control group with only water and no alcohol should be added to the experimental design. * * 2. Research on the biological effects of smoking ** 1. [Question: What is the effect of smoking on the health of mice?] - * * Explanation of the answer **: In the experiment to explore the effects of smoking on the health of mice, if the number of mice in each group is too small (such as only a few), the result is too accidental and not scientific and convincing. After the improvement, if the mice in Group A were normal, the mice in Group B would have bloodshot eyes, red and swollen eyes, abnormal activities, and finally spasm and shock after being exposed to smoking-related substances (simulated smoking environment, etc.). Through comparison, it could be concluded that smoking was harmful to health. 2. [Question: Which systems do the harmful substances produced by smoking harm?] - There are more than 40 kinds of cancer-causing substances in the smoke produced by smoking, as well as more than ten kinds of substances that promote the development of cancer. Among them, the most harmful ones are Nicotine, carbon dioxide, tar, and many other metal compounds. These toxic substances first entered the human body's respiratory system directly, causing respiratory diseases such as tracheitis, rheumatism, pneumonias, and lung cancer. Furthermore, not only did smoking endanger their own health, but it also seriously affected the health of others. It was more harmful to others than to themselves. * * 3. Exploration on the application of fermentation in biology ** 1. [Question: In the process of producing fuel alcohol from corn stalks, what kind of bacteria is needed to produce alcohol from sugar liquid?] - * * Explanation of the answer **: The fermentation of microorganisms plays an important role in food production and other aspects. In the general process of producing fuel alcohol from corn stalks, the bacteria needed for the stage from sugar liquid to alcohol is yeast. Yeast can decompose glucose to produce alcohol and carbon dioxide in the absence of oxygen. * * 4. Exploration on visual formation ** 1. [Question: When the light from the red light enters the eyeball to form an image, what is the order in which the light enters the eyeball?] - * * Explanation of the answer **: The order in which light enters the eyeball is: corneas, pupil, crystalline lens, vitreal body, retina. The photosensory cells in the retina received the stimulation of the image and converted the image information into nerve impulses, which were then transmitted through the optical nerve to the visual center of the cerebral hemisphere to form vision. When a driver stopped at a red light, the cerebral hemisphere was involved in this process, which was a complex reflex. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>