Plasma Membrane

Plasma membranes are selectively permeable. This means

• anything can pass in and out

• the membrane regulates the passage of the material in and out of the cell

• glucose cannot enter the cell

• cholesterol cannot enter

Which is NOT a function of the membrane?

• it forms a selective barrier

• it has receptors for chemical messages

• it is the control center of the cell

• it is involved in self recognition

Which structure is the hydrophilic polar head of the phospholipid molecule?

• F

• D

• C

• A1

Which structure is the hydrophobic tail of the phospholipid molecule?

• E

• B

• G

• A2

The function of the plasma membrane is....

• regulate what enters and leaves the cell.
• fight bacteria and viruses that enter the cell.
• make sure each cell reproduces 
• make sure each cell can move

Tags

NGSS.MS-LS1-2

The majority of the plasma membrane is composed of ______.

• phospholipids

• proteins

• carbohydrates

• cholesterol

What property does the phospholipid bilayer give to a plasma membrane?

• provides the barrier between the inside and outside of the cell

• communicates between cells

• conducts electrical impulses in nerve cells

• allows cells to bind to each other

Tags

NGSS.MS-LS1-2

What does "bilayer" mean?

• one layer
• two layers
• laminated
• bilateral

The Plasma membrane mainly consists of

• Proteins embedded in carbohydrate-lipid layer

• Proteins embedded in a carbohydrate bilayer

• Proteins embedded in a phospholipid layer

• Proteins embedded in a lipid molecules

'Which one is the hydrophilic (water-loving) portion of the plasma membrane that can mix with water?

• A

• B