Exocytosis help please?

"Water and small solutes enter and leave the cell by diffusing through the lipid bilayer of the plasma membrane or by being pumped or moved across the membrane by transport proteins. However, large molecules—such as proteins and polysaccharides, as well as larger particles—generally cross the membrane in bulk, packaged in vesicles. Like active transport, these processes require energy."

In bulk means in large amounts right ? So when they say "Bulk transport across the plasma membrane occurs by exocytosis and endocytosis"

Do they mean that when a large number of sth wants to cross the membrane it occurs by exo and endocytosis or do they mean that when a large object wants to cross it occurs by exo/endocytosis or do they mean both ?                        

There are no answers yet.
Be the first to answer this question.