week 5

Question 1

Tonicity

Answer 1

is the ability of a surrounding solution to

cause a cell to gain or lose water

Question 2

Solute concentration is the same
as that inside the cell; no net water movement
across the plasma membrane

Answer 2

Isotonic

solution

Question 3

Solute concentration is greater

than that inside the cell; cell loses water

Answer 3

Hypertonic

Question 4

Hypotonic

Answer 4

Solute concentration is less than

that inside the cell; cell gains water

Question 5

plant cell favours an ____ environment

Answer 5

hypotonic

Question 6

an animal cell favors an ____ environment

Answer 6

isotonic

Question 7

he control of solute
concentrations and water balance, is a
necessary adaptation

Answer 7

Osmoregulation

,

Question 8

Membrane potential

Answer 8

is the voltage difference

across a membrane.

Question 9

exocytosis

Answer 9

transport vesicles migrate to
the membrane, fuse with it, and release their
contents.

Question 10

the cell takes in
macromolecules by forming vesicles from the
plasma membrane.
•
Endocytosis is a reversal of exocytosis,
involving different proteins.

Answer 10

endocytosis