Question

Centrifugation of a cell results in the rupture of the cell membrane and the contents compacting into pellets in the bottom of the centrifuge tube. Bathing this pellet with a glucose solution yields metabolic activity including the production of ATP. One of the contents of this pellet is most likely which of the following?

A. Centrifugation of a cell results in the rupture of the cell membrane and the contents compacting into pellets in the bottom of the centrifuge tube.
B. Bathing this pellet with a glucose solution yields metabolic activity including the production of ATP.

Answer 1

Most likely it should be Mitochondria.

Explanation:

Centrifugation of cells :

At first, large components undergo precipitation such as whole-cell nuclei, cytoskeleton. They form a pellet at the bottom of the centrifuge tube at a low speed. Then at medium speed mitochondria, lysosome, peroxisomes form the pellet and after that at higher speed microsomes, small vesicles form a pellet. At last at very high speed, ribosomes, viruses, and macromolecules form their pellet.

• Mitochondria will be the most suitable option because mitochondria are the only substance that can produce ATP.