BIOCHM 1090 Lecture Notes - Lecture 28: Glycolipid, Ketogenesis, Gluconeogenesis
56 views2 pages
Get access
Grade+
$40 USD/m
Billed monthly
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
10 Verified Answers
Class+
$30 USD/m
Billed monthly
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
7 Verified Answers
Related Documents
Related Questions
The main function of a cell membrane is to allow substances to enter and leave the cell. Which is a correct description of transport through a cell membrane?
a. Diffusion, or passive transport, occurs when molecules diffuse from a lower concentration to a higher concentration. |
b. Facilitated transport occurs when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion. |
c. The lipid bilayer opens up and allows the ions or molecules to enter the cell, then closes. |
d. Active transport occurs when molecules diffuse from a higher concentration to a lower concentration. |