Question

What appears to be an early step in the process of vesicle fusion to its target compartment?

1) swelling of the vesicle
2) shrinkage of the vesicle
3) tethering of vesicles to the target compartment by extended, fibrous proteins
4) merging of the lipid bilayer of the vesicle with the plasma membrane
5) a and d

Answer 1

An early step in the process of vesicle fusion to its target compartment is the tethering of vesicles to the target compartment by extended, fibrous proteins.

Step-by-step explanation:

An early step in the process of vesicle fusion to its target compartment is the tethering of vesicles to the target compartment by extended, fibrous proteins.

These proteins help to bring the vesicle close to the target compartment.

Another early step is the swelling of the vesicle, which occurs as the vesicle fuses with the target compartment.

So the correct answer is option 3) tethering of vesicles to the target compartment by extended, fibrous proteins.