Question

Which molecular families participate in vesicle fusion with target membranes

Ran GTPases

Rab GTPases

SNARES

A and C only

B and C only

Autophagy is

		A. A trafficking pathway to the lysosome
		B. The engulfment of defective organelles or protein aggregates by a double membrane vesicle
		C. Activated by starving the cells
		D. Was discovered in yeast
		E. All of the above

Answer 1

Question 1: Which molecular families participate in vesicle fusion with target membranes? B and C only.

Both Rab GTPases and SNARES are involved in the vesicle fusion with target membranes (trafficking).

Question 2: Autophagy is All of the above.

Autophagy involves trafficking defective organelles or protein aggregates to the lysosome for their degradation.

Autophagy was discovered in yeast which was subjected to starvation.

Autophagy is a recycling mechanism where damaged goods like cell organelles and proteins are recycle back to their raw materials via lysosomes for reuse.