+
Endocytosis and Exocytosis
4 Tutorials that teach Endocytosis and Exocytosis
Take your pick:
Endocytosis and Exocytosis

Endocytosis and Exocytosis

Author: Nathan Lampson
Description:
This lesson introduces the processes of endocytosis and exocytosis, both processes which move larger molecules in and out of the cell, by way of vacuoles.
(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

 

Endocytosis

A cell takes in large molecules by forming a vesicle.  Vesicles and vacuoles created during endocytosis are composed of plasma membrane.  Endocytosis is a form of active transport because it requires energy in the form of ATP in order to occur.

Exocytosis

In exocytosis, the cell exports bulky materials by containing them in a vesicle and expelling them through the cell membrane.  Exocytosis is the reverse process of endocytosis.

Example:

When humans cry, exocytosis is used to expel a salty solution containing proteins.

Source: Concepts in Biology Twelfth Edition Eldon Enger, et al.