Membrane Structure

What three terms describe the head of a phospholipid

• polar, hydrophobic, made of phosphate
• polar, hydrophilic, made of phosphate
• non polar,hydrophobic, made of phosphate 
• non polar,hydrophilic, made of lipid

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

• Lipids
• Carbohydrates
• Proteins
• Nucleic Acids

Part of the plasma membrane responsible for cell recognition.. 

• C
• E
• B
• D

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

• E
• B
• C
• D

The _____ in the plasma membrane prevents the fatty acids tails from sticking together and not moving too far apart or too close to each other.

• carbohydrate chains
• cholesterol
• proteins
• lipids

Hydrophobic region of the cell membrane?

• E
• B
• C
• A 

Hydrophilic means...

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

Phospholipid tails are...

• Hydrophobic lipids
• Hydrophilic lipids
• hydrophobic phosphate
• hydrophilic phosphate

In water, phosphopids line up in two layers

• tail to tail
• head to head
• tail to head 
• depends on the salinity of the water

What kind of embedded protein receives messages from the outside and relays them to the inside?

• marker
• channel
• transport
• receptor