Unit 5 Review: Cell membrane & transport

The function of the plasma membrane is....

• to regulate what enters and leaves the cell to maintain homeostasis.

• fight bacteria and viruses that enter the cell.

• provide rigid support and protection to the cell.

• make sure each cell can move

What forms the channels and pumps in the phospholipid bilayer?

• carbohydrates
• proteins
• hydrophilic heads 
• lipids

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

• True
• False

Tags

NGSS.HS-LS1-3

Something is ___________ ____________
when some molecules can cross the membrane while others cannot. 

• Selectively (or Semi) Permeable 
• Totally Transparent
• Liquid Licorice 
• Heavily Patrolled 

Tags

CCSS.RI.7.5

CCSS.RI.8.3

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

What is one major difference between passive and active transport?

• Passive transport uses energy; active transport does not.
• Both types of transport use energy.
• Active transport uses energy; passive transport does not.
• No difference. They are both the same.

What type of transport is this?

• facilitated diffusion
• active transport
• diffusion
• osmosis

Tags

NGSS.MS-LS1-2

In an isotonic solution which way will the water flow

• it will not flow at all

• it will flow into the cell

• it will flow both ways at equal rates

• out of the cell

What would happen to a cell placed in a hypertonic solution

• The cell would shrink

• The cell would expand and possibly burst

• The cell would remain the same

• The cell would dance and do the Nay Nay!

Tags

NGSS.MS-LS1-5

In this picture, which way will the water move?

• Water will move into the cell
• Water will move out of the cell
• Water will move in and out of the cell
• Water will not move

Tags

NGSS.MS-LS1-2

Active transport is the movement of large materials across a cell membrane from ______ to ______ concentration

• high to low

• low to high

• high to high

• low to low