Question6

When bacteria are placed in a hypotonic solution they do not, as you might expect,undergo cytolysis.This happens because:

Select one:

a.bacteria possess a rigid cell wall that limits the amount they can swell

b.bacteria react to hypotonic threatby crenating rather than lysing

c.bacteria contain water pumps that effectively pump water into the cell

d.all of the above

Question7

Substances will diffuse more rapidly into a cell when:

Select one:

a.the molecules are large

b.those substances are relatively hydrophilic

c.you increase the concentration of that substance outside the membrane

d.you decrease the temperature around the cell

Question8

When red blood cells are placed in a hypertonic solution

Select one:

a.water moves from the exterior to the interior of the cell

b.the strong osmotic gradient causes cells to shrink/crenate

c.nothing happens - there is no osmotic gradient across the membrane

d.salts moves from the exterior to the interior of the cell

Question9

Match each of these cell structures with the cell type in which you will find it (eukaryotic, prokarytic, both):

DNA -

Flagella -

Cell membrane -

Nuclear Membrane -

Golgi Body -

Cholorplasts -

Ribosomes -

Mitochondria -

Cell Wall Membrane bound organelles are almost always absent -