Biology endosymbiosis

Question

The process described in endosymbiotic theory is most analogous to which form of membrane transport?

a. Primary active transport

b. Pinocytosis

c. Phagocytosis

d. Facilitated diffusion

Answer 1

Hi there!

The endosymbiotic theory explains how eukaryotic cells might have originated and evolved through the process of multiple cells joining together to form one, creating a symbiotic relationship.

Phagocytosis is similar to endosymbiosis in that it enables eukaryotes to feed on other organism. The cell uses its cell membrane to engulf/ingest a solid particle.

However, pinocytosis is the fluid endocytosis process where small particles are suspended in extracellular fluid and are brought into and engulfed into the cell creating a vesicle in the cell.

One way I remember it is phagocytosis is "cell eating", and pinocytosis is "cell drinking" therefore phagocytosis is most similar and analogous to the endosymbiotic theory.

Hope that helps :)