Cell Membrane and Transport

Front

Which form of cellular transport can move material from a low concentration area to a high concentration area?

Back

Active Transport

Front

Your legs are swelling due to water retention. Which method uses osmosis to reduce water retention? Options: Soaking in salt water, Blood-letting with leeches, Wrapping your legs in bandages, Laying in bed to rest.

Back

Soaking in salt water

Front

Which of the following is NOT a characteristic of the cell membrane?

• Forms a protective boundary between the inside and outside of the cell
• Controls what enters and leaves the cell
• Composed of a double layer of phospholipids
• Contains high amounts of cellulose to maintain structure

Back

Contains high amounts of cellulose to maintain structure

Front

Facilitated diffusion

Back

Molecules pass through a channel protein, moving from high concentration to low.

Front

Semi-permeable membranes...

Back

Allow some materials to pass through freely, but stops other materials

Front

Describe the difference between active and passive transport.

Back

Active: moves material against the concentration gradient - Passive: moves material with the concentration gradient

Front

A cell that is 90% water and 10% solute is placed into a 70% water and 30% solute solution. The solution is ___________ to the cell.

Back

Hypertonic

Front

A cell is placed in a hypotonic solution. What is most likely to happen to the cell? Options: It will shrink, It will swell, It will remain unchanged, It will dissolve

Back

It will swell

Front

A cell is placed in a hypertonic solution. What is most likely to happen to the cell?

Back

It will shrink

Front

A cell is placed in an isotonic solution. What is most likely to happen to the cell?

Back

It will remain unchanged