Question

Which of the following is true about glycolysis?

• A. Glycolysis takes place in the mitochondria.
• B. Glycolysis is the last step in aerobic respiration.
• C. One glucose molecule is broken down to 3 pyruvic acid molecules.
• D. Glycolysis is an anaerobic process.

Answer 1

The correct option is D Glycolysis is an anaerobic process.

$\bullet$ Glycolysis is the first step in both aerobic and anaerobic respiration.
$\bullet$ None of the steps in glycolysis involves the use of oxygen to form the end product - pyruvic acid.
$\bullet$ Glycolysis takes place in the cytoplasm of the cell.
$\bullet$ 2 molecules of pyruvic acid are formed from one glucose molecule. However, immediately upon completing glycolysis, the cell must continue respiration in either an aerobic or anaerobic direction; this choice is made based on the circumstances of the particular cell.