Question

Mitochondria performs all functions except

• A. Nucleic acid synthesis
• B. Steroid synthesis
• C. ATP synthesis
• D. Polysaccharide degradation.

Answer 1

The correct option is D Polysaccharide degradation.

Mitochondria synthesizes ATP by the process of aerobic respiration during normal carbohydrate and β-oxidation of fatty acids. Carbohydrates and β-oxidation both require Krebs cycle. As mitochondria has its own genetic material, nucleic acid synthesis also occurs inside mitochondria. Degradation of polysaccharide is not a function of mitochondria.

However, mitochondria will be required to catabolise the monomeric products which will be obtained by breaking of polysaccharides.