Cell Membrane Structure

What is NOT TRUE about the cell membrane

• It controls what enters and leaves the cell
• Semipermeable
• Phospholipid bilayer
• Contains digestive enzymes

What does "bilayer" mean?

• one layer

• two layers

• three layers

• four layers

What is embedded in the phospholipid bilayer?

• proteins
• salt
• water

What forms the channels and pumps in the phospholipid bilayer?

• carbohydrates
• proteins
• hydrophilic heads 
• lipids

The cell is an _____ system.  It requires the constant inflow of matter and energy and outflow of waste. 

• closed
• open
• false
• circulatory

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

What is the function of cholesterol in the cell membrane?

• transport ions into the cell
• allows the fatty acids not to stick together
• communication between cells
• keeps polar molecules out of the cell

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

Hydrophilic means...

• water-loving
• water-fearing
• nonpolar
• lipid soluble

Tags

NGSS.HS-ESS2-5

Hydrophobic region of the cell membrane?

• E
• B
• C
• A