PHYSIOLOGY
MUSCLE ENERGETICS GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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releasing heat upon hydrolysis
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acting as a catalyst
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releasing ribose to drive reactions
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direct chemical transfer of a phosphate group
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Detailed explanation-1: -Substrate-level phosphorylation is the direct formation of ATP or GTP by transferring a phosphate group from a high energy compound to an ADP or GDP molecule.
Detailed explanation-2: -ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation). This transfer is carried out by special enzymes that couple the release of energy from ATP to cellular activities that require energy.
Detailed explanation-3: -The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups. ATP is commonly referred to as the “energy currency” of the cell, as it provides readily releasable energy in the bond between the second and third phosphate groups.
Detailed explanation-4: -ATP transfers a phosphate group to the reacting molecule of the endergonic reaction. The energy from the phosphate group drives the endergonic process. This way, ATP transfers energy from an exergonic to an endergonic reaction.