7.2/7.3 QUIZ (Cell Membrane and Transport)

In facilitated diffusion, a transport protein is required to move molecules across the membrane.

• True

• False

The movement of substances from an area of LOW concentration to an area of HIGH concentration with the USE of ENERGY is called what?

• active transport

• passive transport

• osmosis

• facilitated diffusion

Tags

NGSS.HS-LS2-3

Large/polar molecules can diffuse right through the membrane without the help of transport proteins.

• True

• False

View the picture. Determine what type of transport is being shown. (Note- the material is being shipped OUT of the cell)

• Osmosis

• Exocytosis

• Diffusion

• Endocytosis

What would happen to a blood cell when placed in a hypotonic environment?

• it will lose water and shrink

• it will gain water and burst

• the water will come in and out of the cell at the same time

• no change will occur

What is the function of the cholesterol molecules in the cell membrane?

• they allow materials to be transported

• they provide energy

• they block materials from entering the membrane

• they stabilize the membrane

What area of the phospholipid is attracted to water (hydrophilic)?

• polar heads

• nonpolar fatty acid tails

The movement of a substance from an area of HIGH concentration to an area of LOW concentration WITHOUT the use of energy.

• active transport

• passive transport

• isotonic transport

• hypotonic transport

What happens to a cell when it is placed in a hypertonic environment?

• the cell bursts

• the cell shrinks

• the cell stays the same

• the cell swells

When a cell is placed in a hypertonic environment, what is the movement of water?

• more water moves out

• more water moves in

• water moves in and out at the same rate