Passive Transport

Question 0

Osmosis

Answer 0

Passive transport

Random movement of H2O from areas of high H2O content to low H2O content

Question 1

Diffusion

Answer 1

Passive transport

Random movement of solute (molecules, ions) from areas of high concentration to low concentration

Question 2

Hypertonic solution

Answer 2

More concentrated

More solute, less H2O

Question 3

Hypotonic solution

Answer 3

Less concentrated

Less solute, more H2O

Question 4

Isotonic solution

Answer 4

Same concentration

Same amount of solute as water

Question 5

Osmoregulation

Answer 5

Water balance

Which way is water going to move by osmosis.

Water moves from O—>e

Question 6

Animal cells: what is normal tonicity?

What happens in other tonicity?

Answer 6

Hypotonic- creates lysis bursting of the cell

Hypertonic- causes the cell to crenate (shrivel up)

Isotonic- normal environment for most animal cells

Question 7

Plant cells: what is normal tonicity?

What happens in other tonicity?

Answer 7

Hypertonic- plasmolysis occurs (extreme loss of H2O), which is deadly to the plant cell

Isotonic- plant becomes flaccid (limp and wilted)

Hypotonic- ideal environment. Becomes turgid (high turgor pressure)

Question 8

Contractile vacuole in protozoans prevents?

Answer 8

Prevents lysis by pumping out water, when in a hypotonic environment.

Question 9

Carrier facilitated diffusion

Answer 9

Passive transport that does not requires ATP.

Increase the rate (speed) for transport

H2O (moves through aquaporins)

Glucose, lactose, sucrose, would require a carrier transport protein to increase their speed through bi layer. They would take forever to move through without help.