Cell Membrane retake

True or False:  Regulating what enters and leaves the cell helps the cell maintain homeostasis. 

• True
• False

Most of the cell membrane is made of...

• Lipids
• Carbohydrates
• Proteins
• Nucleic acids

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

Phospholipid heads are...

• Hydrophobic
• Hydrophilic

___________ allow cells to recognize each other and act like ID tags. 

• Carbohydrates 
• Proteins
• Phospholipids 
• Cholesterol

How many layers is the lipid bilayer?

• 1
• 2
• 3
• 4

True or False: Large molecules, such as glucose, can easily pass through the cell membrane without any help...

• True: They pass right through.
• False: They need a protein channel.

What forms the channels and pumps in the phospholipid bilayer?

• Carbohydrates
• Proteins
• Hydrophilic heads 
• Lipids

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

The movement of particles from an area of high to low concentration is known as--

• Passive Transport

• Active Transport