Given below are two statements: 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. Choose the correct answer from the options given below:
medium
Respiration in Plants
2023
biology
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.
A is true but R is false.
A is false but R is true.
Explanation
To solve this problem, we need to analyze the given statements: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.Let's break down each statement:āAssertion (A): - Glycolysis is a metabolic pathway that converts glucose into pyruvate, generating ATP and NADH.
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- During glycolysis, ATP is indeed consumed in two steps:
1. The conversion of glucose to glucose-6-phosphate.
2. The conversion of fructose-6-phosphate to fructose-1,6-bisphosphate.
- Therefore, Assertion (A) is correct.
ā
Reason (R):
- The first ATP is used in the phosphorylation of glucose to form glucose-6-phosphate, catalyzed by the enzyme hexokinase.
- The second ATP is used in the phosphorylation of fructose-6-phosphate to form fructose-1,6-bisphosphate, catalyzed by the enzyme phosphofructokinase.
- Hence, Reason (R) is correct.
Now, let's determine if (R) is the correct explanation of (A):
ā
The reason accurately describes the two steps in glycolysis where ATP is consumed.
ā
It provides the specific reactions and enzymes involved, explaining why ATP is used in these steps.
Therefore, (R) is indeed the correct explanation of (A).
Thus, the most appropriate answer is Option 1: Both (A) and (R) are true and (R) is the correct explanation of (A).