Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): ATP is used at two steps in glycolysis.
Reason (R): First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1,6-diphosphate.
In the light of the above statements, choose the correct answer from the options given below: [2023]
(A) is true but (R) is false.
(A) is false but (R) is true.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(3)
In glycolysis, ATP is used at two steps: first in the conversion of glucose into glucose-6-phosphate and second in the conversion of fructose 6 phosphate to fructose-1, 6-bisphosphate.
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalysed by [2019]
phosphofructokinase
aldolase
hexokinase
enolase
(3)
Glucose is phosphorylated to glucose-6-phosphate by ATP in presence of enzyme hexokinase and .
What is the role of in cellular respiration? [2018]
It functions as an enzyme.
It functions as an electron carrier.
It is a nucleotide source for ATP synthesis.
It is the final electron acceptor for anaerobic respiration.
(2)
is a coenzyme and an electron carrier. It acts as an electron acceptor in glycolysis and Kreb’s cycle through dehydrogenation processes and is then reduced to NADH. acts as an electron carrier which is later used to generate proton gradient across the inner mitochondrial membrane and produce energy in the form of ATP.
