Question

why are vesicles able to fuse with the plasma membrane?
they are negatively charged
they are both made of proteins
they are positively charged

Explanation:

Vesicles and the plasma - membrane are both composed of a lipid - bilayer structure. This similar composition allows them to fuse. The options provided are incorrect. Vesicles and plasma - membrane fusion is due to their lipid - based nature, not charge or protein - only composition.

Answer:

None of the above options are correct.