Cell Membrane Structure

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 

Tags

NGSS.MS-LS1-2

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.

Passive Transport is the movement of particles across the membrane from an area of [ ___ ] concentration to an area of [ ___ ] concentration.

• high - low

• low - high

• low - low

• high - high

What is the function of glycoproteins?

• Cell recognition and cell signalling

• Allows polar molecules to pass through the membrane

• Maintains membrane fluidity

• Engulfing other cells