2003 AIPMT BiomoleculesMetabolism of Carbohydrates Easy Question 54 of 67 in Biomolecules

Glycolysis is : -

A Oxidation of glucose to glutamate
B Conversion of pyruvate to citrate
C Oxidation of glucose to pyruvate
D Conversion of glucose to haem

The answer is C.

Solution

Glycolysis (EMP pathway) is the first stage of respiration, taking place in the cytoplasm.
In it, one molecule of glucose (6C) is partially oxidised to two molecules of pyruvic acid (3C), with a net gain of 2 ATP and 2 NADH.
$C_6H_{12}O_6 \rightarrow 2CH_3COCOOH$ (+ 2 ATP + 2 NADH)
Conversion of pyruvate to acetyl CoA and then into citrate occurs in the mitochondria (Krebs cycle).
So glycolysis is the oxidation of glucose to pyruvate.

Concept Definition of glycolysis

Biomolecules in past papers

67 questions from this chapter have appeared across 25 exam years.