本题目来源于试卷: Interaction & Interdependence C.2 Cell Respiration，类别为 IB生物学
[单选题]
What are the product/qb)4phzf (i9zutvkk d-bc, dh x.9cw:u4q;p s ofyw fl::0 mk4pbt 0np/r the hydrolysis of ATP?
A. Pyruvate and energy
B. ADP, inorganic phosphate and energy
C. ATP and water
D. Oxygen, hydrogen, phosphorus, carbon and nitrogen
参考答案: B
本题详细解析:
Cell respiration is the process w 89suyh-p6me-fsoca cz m;9y9 here energy is released from organic compounds to form adenosine triphosphate (ATP). ATP consists of the nitrogenous base adenine, a ribose sugar and three phosphate groups. These three components contain the elements oxygen, hydrogen, phosphorus, carbon and nitrogen (Choice D). Even though ATP is made up of these five elements, they are not products of hydrolysis.
ATP is the immediately available source of energy in cells and fuels cell processes. This takes place when ATP undergoes hydrolysis and the energy which is stored in the phosphate bond of ATP is released. The phosphate bonds that are broken lead to the formation of adenosine diphosphate (ADP), inorganic phosphate and a release of energy.
Hydrolysis is a catabolic reaction of breaking down large molecules into small molecules. Water is required to split apart ATP, hence both water and ATP are the reactants in a hydrol-;a-s c cs869p fhzoyu m9mey9ysis reaction and not products (Choice C).
The main stages of cellular respiration are glycolysis, the Krebs cycle and the electron transport chain. In glycolysis, glucose is broken down to pyruvate (Choice A) which then moves on to the Krebs cycle and electron transport chain before generating a high yield of 38 ATP.
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