U05 B4 Cell Membrane Structure & Diffusion

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

• True
• False

Tags

NGSS.MS-LS1-2

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

What is the name for a molecule that has a polar head region and a hydrophobic tail region?

• Bihydrophicity
• Amphipathic
• Hydrophilic
• Dipolarity

___________ 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

What type of molecule has the most difficult time passing through the membrane? 

• small & hydrophobic
• small & hydrophilic
• large & hydrophobic
• large & hydrophilic