3B Passive Transport

Question 1

Is ATP required?

Answer 1

No, why it’s called passive

Question 2

Movement of molecules in diffusion is…

Answer 2

from an area of high to low concentration along the concentration gradient

Question 3

When does diffusion stop?

Answer 3

When equilibrium is reached

Question 4

What molecules can pass through in simple diffusion?

Answer 4

Non-polar and hydrophobic, small molecules (like CO2 and O2)

Question 5

How does facilitated diffusion occur?

Answer 5

a protein channel or a protein carrier. Happens when molecules are too large to pass through simple diffusion.

Question 6

Movement of molecules in osmosis is…

Answer 6

Water is diffused from areas of high to low concentration of water.

Question 7

A cell being hypertonic results in..

Answer 7

Cell shrinking due to there being high solute and low water

Question 8

A cell being hypotonic results in..

Answer 8

Cell growing/bursting due to there being low solute and high water

Question 9

Isotonic

Answer 9

Equal water and solute, no net movement