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ATP can be produced by organelles such as mitochondria, and the direct energy substance in the cell, ATP is also called adenosine triphosphate and adenotriphosphate.
ATP hydrolysis refers to the process in which ATP removes a molecule of phosphate groups under the action of enzymes to form ADP and release a large amount of energy.
In the structural formula of ATP, it can be seen that adenine combines with ribose sugar to form adenosine, and adenosine combines with 3 linked phosphate groups through the 5th hydroxyl group in ribose to form a chemical bond represented by " " between the two phosphate groups (that is, between p and p) is a high-energy phosphate bond. When a high-energy phosphate bond is hydrolyzed, more than twice the energy released is a normal chemical bond. For example, when the ATP terminal phosphate group is hydrolyzed, the energy released is kj mol, whereas when glucose-6 phosphate is hydrolyzed, the energy released is only kj mol.
Generally speaking, compounds that release more than kj mol of energy during hydrolysis are called high-energy compounds. Obviously, ATP is a high-energy compound. All kinds of cells use ATP as a direct energy source.
In fact, ATP is the central substance for the release, storage, transfer, and utilization of energy within the cell.
ATP is a key substance in the conversion and transfer of energy in living organisms. All life activities of living organisms are inseparable from the substances that directly supply usable energy in the organism, and are the "transit station" for energy conversion in cells. All forms of energy conversion are centered on ATP.
Due to the presence of various enzymes as biological catalysts in living organisms and the existence of biofilm systems in cells, the energy in ATP can be directly converted into various other forms of energy for various life activities.
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Brain waves, ATP is used to maintain neuronal cell body sites.
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For example, some cells need energy, so ATP needs water to release energy for it, and "the energy consumption of the cell is always linked to the reaction of ATP hydrolysis".
For example, in the photosynthesis light reaction stage, the catalytic action of the relevant enzymes will cause the chemical reaction between ADP and PI to form ATP, so yes. Isn't ATP going to decompose when exerting energy?
That's because you understand that the subject is misunderstood, and the exergation is not ATP, but the exergation of other substances, and the chemical reaction between ADP and PI forms ATP. Because ATP can directly supply energy (note the word direct).
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Because ATP is less abundant in the human body and only releases energy by hydrolysis, it must be decomposed and synthesized at the same time to ensure the normal metabolism of the body.
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ATP is the main energy supply substance for life, and various substances must be converted into ATP before they can be used by cells, so the energy consumed by cells must be provided by ATP hydrolysis, and the energy released by cells must be synthesized by ATP for use when needed.
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。。。Why do you think he's wrong.
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Answer] A answer to the analysis of the test question: Light energy is converted into the energy of ATP in the cells of skeletal muscle, which must first go through the photosynthesis of plants, then enter the human digestive tract through digestion and absorption, enter the skeletal muscle in the way of active transportation, and finally form ATP through the energy generated by the respiration of muscle cells, so A is correct.
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I don't know about biology, but you can see if the place where the protein is broken down is different from the place where ATP is synthesized.........or other reasons......
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ATP is an energy substance that is directly used by bioenergy.
Excitation is conducted by electrical signals on nerve fibers.
Active transport requires a carrier and energy, which is provided by ATP. From low to high concentrations, the osmotic energy is the energy generated by the water pressure difference between different concentrations of solutions. Different concentrations are low and high concentrations.
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Answer] A Answer Analysis] Test Question Analysis: Plants use photosynthesis to convert light energy into organic matter (sugars), which are digested into glucose by animal feeding, absorbed into tissue cells through active transport, and oxidized and decomposed organic matter through cellular respiration, releasing chemical energy that can be active in ATP.
So choose A. Test point: This question examines the knowledge related to the energy conversion required for life, and is intended to test the candidate's ability to understand the key points of the knowledge learned, grasp the internal connection between knowledge, and form the energy dispersion force of the knowledge network structure.
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Answer] A Answer Analysis] Test Question Analysis: Plant Yu Xian Wu Xiao absorbs CO2 to synthesize organic matter such as starch through photosynthesis, that is, steps; Animals directly or indirectly feed on plants, digesting organic matter such as starch into small molecule substances such as glucose, i.e., steps; Glucose is absorbed into the blood by small intestinal epithelial cells in the form of active transport, and through body fluid transport, glucose is transported to skeletal muscle, and enters skeletal muscle cells through active transport, that is, steps; Within skeletal muscle cells, glucose is broken down into CO2 and water by respiration, while releasing heat and synthesizing ATP, i.e. step.
Test point: This question examines the energy metabolism process of cells, which is intended to test students' ability to understand the key points of the knowledge they have learned, grasp the internal connection between knowledge, form a network structure of knowledge, connect theory with practice, and comprehensively use the knowledge they have learned to solve some biological problems in nature and social life.
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