LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Adenosine triphosphate is the immediately available energy source for a cell.
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Adenosine triphosphate is the immediately available glucose source for a cell.
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Adenosine triphosphate is the immediately available glycolysis source for a cell.
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Adenosine triphosphate is the immediately non-available energy source for a cell.
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Detailed explanation-1: -Adenosine triphosphate (ATP) is the source of energy for use and storage at the cellular level. The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups.
Detailed explanation-2: -The immediate source of energy for most cells is glucose. But glucose is not the only fuel on which cells depend. Other carbohydrates, fats and proteins may in certain cells or at certain times be used as a source of ATP.
Detailed explanation-3: -Answer and Explanation: H+ movement is the immediate source of energy for rebuilding ATP. Protons flow from the intramembrane space of the mitochondria to the mitochondrial matrix through the ATP synthase enzyme and catalyse its production of ATP from ADP and inorganic phosphate.
Detailed explanation-4: -In general, the main energy source for cellular metabolism is glucose, which is catabolized in the three subsequent processes-glycolysis, tricarboxylic acid cycle (TCA or Krebs cycle), and finally oxidative phosphorylation-to produce ATP.