Multiple Choice
What happens when diffusion moves molecules across the plasma membrane?
A) The cell gains needed materials and gets rid of excess materials very quickly.
B) Most molecules are capable of crossing the phospholipid bilayer at any location and at basically the same rate.
C) Energy input is required to transport molecules.
D) The rate of diffusion cannot be influenced by the cell.
E) The process is relatively slow and is driven by concentration gradients.
Correct Answer:

Verified
Correct Answer:
Verified
Q38: What prevents your immune system from attacking
Q39: The hydrophobic tails of a phospholipid bilayer
Q40: The gases O2 and CO2 enter or
Q42: The hydrophilic regions of a membrane protein
Q44: _ is used by cells to consume
Q45: Two similar-sized animal cells are placed in
Q46: In biological membranes, the phospholipids are arranged
Q47: Carrier molecules in the plasma membrane are
Q48: The movement of molecules across a cell
Q88: Both plant cells and animal cells will