MCQ
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 :

  • A
    $A$ is false but $R$ is true.
  • Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.
  • C
    Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$.
  • D
    $A$ is true but $R$ is false.

Answer

Correct option: B.
Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.
b
$ATP$ in glycolysis is used at two steps of conversion that are

Glucose $\rightarrow$ Glucose$-6-$phosphate

Fructose-6-phosphate $\rightarrow$ Fructose$-1, 6-$bisphosphate

The reason of the utilisation of $ATP$ is for phosphorylation the substrates.

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