Membrane

Which of the following is responsible for getting large or charged (polar) molecules across the cell membrane?

• E

• B

• C

• D

The function of the plasma membrane is....

• to regulate what enters and leaves the cell.

• fight bacteria and viruses that enter the cell.

• provide rigid support and protection to the cell.

• make sure each cell can move

Tags

NGSS.MS-LS1-2

Most of the cell membrane is made of...

• Lipids

• Carbohydrates

• Proteins

• Nucleic acids

Hydrophilic portion of cell membrane?

• A

• C

• D

• E 

Hydrophobic region of the cell membrane?

• E

• B

• C

• A 

What is another term for "selectively permeable"?

• porous

• completely permeable

• permanent

• semipermeable

What forms the channels and pumps in the phospholipid bilayer?

• carbohydrates

• proteins

• hydrophilic heads 

• lipids

What is embedded in the phospholipid bilayer?

• proteins

• salt

• water

True or false:  Some things are not allowed to enter the cell at all. 

• True

• False

Hypertonic solutions...

• water moves from hypotonic to hypertonic

• water moves from hypertonic to hypotonic