Question

What is the primary evidence supporting the endosymbiotic theory regarding mitochondria?

a) DNA structure
b) Presence of ribosomes
c) Double membrane structure
d) ATP production

Answer 1

The primary evidence supporting the endosymbiotic theory regarding mitochondria includes the presence of ribosomes, double membrane structure, and ATP production.

Step-by-step explanation:

The primary evidence supporting the endosymbiotic theory regarding mitochondria includes:

1. Presence of ribosomes: Mitochondria have their own ribosomes, which are similar to bacterial ribosomes. This suggests that mitochondria were once free-living bacteria that were engulfed by eukaryotic cells.
2. Double membrane structure: Mitochondria have a double membrane, with the inner membrane resembling the plasma membrane of bacteria. This supports the idea that mitochondria were originally engulfed by a eukaryotic cell.
3. ATP production: Mitochondria are the powerhouse of the cell, producing ATP through the process of aerobic respiration. This ability to generate energy is also consistent with the idea that mitochondria were once independent bacteria.