PHYSIOLOGY
MUSCLE ENERGETICS GLYCOLYSIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
anaerobic respiration
|
|
|
photophosphorylation
|
|
|
electron transport
|
|
|
Krebs cycle
|
|
|
substrate level phosphorylation
|
Detailed explanation-1: -The second substrate-level phosphorylation occurs by dephosphorylating phosphoenolpyruvate, catalyzed by pyruvate kinase, producing pyruvate and ATP. During the preparatory phase, each 6-carbon glucose molecule is broken into two 3-carbon molecules.
Detailed explanation-2: -Explanation: The tenth and final reaction of glycolysis involves the conversion of phosphoenolpyruvate (PEP) into pyruvate. This step is catalyzed by the enzyme pyruvate kinase.
Detailed explanation-3: -Substrate-level phosphorylation is when a nucleoside diphosphate (ADP or GDP) is phosphorylated by a substrate to produce a nucleoside triphosphate (ATP or GTP).
Detailed explanation-4: -On substrate level phosphorylation, one molecule of PGAL produces 3 ATP (two from glycolysis and one from TCA cycle).