Why is endocytosis considered a mode of active transport? what process of active transport is the reverse of endocytosis?

1 Answer

Endocytosis is considered active transport because it requires that the cell use energy.

Explanation:

During endocytosis (endo means inside) a cell will use its cell membrane to engulf an object which is outside of the cell. This process takes effort by the cell, so it needs to use energy (ATP!)

![https://en.wikipedia.org/wiki/Endocytosis](useruploads.socratic.orguseruploads.socratic.org)

The process which is the reverse of endocytosis is exocytosis (exo means outside - think exit).
![https://en.wikipedia.org/wiki/Exocytosis](useruploads.socratic.orguseruploads.socratic.org)

Here is a review of transport topics - skip foward to 7:20 for discussion of endocytosis and exocytosis.

Video from: Noel Pauller