Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

Which characteristic of mitochondria supports the endosymbiotic theory?
Options
A Presence of circular DNA
Correct Answer
B Lack of a double membrane
C Ribosomes identical to cytoplasmic ones
D Linear DNA like eukaryotic nuclei
Correct Answer

Option A is the correct answer.

Detailed Explanation

Mitochondria contain their own small, circular DNA molecules, similar to bacterial chromosomes. This is a key piece of evidence supporting their origin from free-living prokaryotes.

Hint

Their genetic material resembles that of bacteria.

Question Info