Cells and Membranes

What is another term for "selectively permeable"?

• porous
• completely permeable
• permanent
• semipermeable

Most of the cell membrane is made of...

• Lipids
• Carbohydrates
• Proteins
• Nucleic acids

What forms the channels and pumps in the phospholipid bilayer?

• carbohydrates

• proteins

• hydrophilic heads

• lipids

Which of the following is NOT part of the cell membrane?

• Lipids
• Carbohydrates
• Proteins
• Nucleic Acids

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

• E
• B
• C
• D

Part of the plasma membrane responsible for cell recognition... 

• C
• E
• B
• D

The _____ in the plasma membrane prevents the fatty acids tails from sticking together. 

• carbohydrate chains
• cholesterol
• proteins
• lipids

Protein...

• A
• B
• C
• D

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

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

Hydrophilic portion of cell membrane?

• A
• C
• D
• E