Botany · Respiration in Plants
NEET (UG) 2023 — Question 97
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-6phosphate into fructose-1-6-diphosphate.
In light of the above statements, choose the most appropriate answer from the options given below.
- Option A:Correct
Both (A) and (R) are true and (R) is the correct explanation of (A).
- Option B:
Both (A) and (R) are true and (R) is NOT the correct explanation of (A).
- Option C:
(A) is true but (R) is false.
- Option D:
(A) is false but (R) is true.
Answer: A
Step-by-step solution
Glycolysis consumes ATP at two priming steps, both for phosphorylation of substrates. First, glucose is converted to glucose-6-phosphate using one ATP: . Second, fructose-6-phosphate is converted to fructose-1,6-bisphosphate using one ATP: . Therefore Assertion (A) is true, and Reason (R) correctly names exactly these two ATP-utilising steps. Hence both A and R are true and R is the correct explanation of A.
Answer key and solution verified before publishing.
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- Exam
- NEET (UG) 2023
- Paper
- 2023 paper
- Subject
- Botany
- Chapter
- Respiration in Plants
- Topic
- Glycolysis