Question

BIO HELP! 20PTS

1. A plasma membrane and a cell wall:

-are two names for the same thing
-have the same structure and different functions
-have different structures and the same function
-have different structures and different functions

2. Of the five transport mechanisms, which one will the cell utilize if the substance being transported is insoluble?

-active transport
-passive transport
-pinocytosis
-facilitated diffusion
-phagocytosis

3. The natural tendency of molecules to move from higher to lower concentrations is _____.

- diffusion
-solubility
-transport
-dissolution
-fermentation

4.Why do O2 and CO2 pass through the plasma membrane?

they are nonpolar and soluble
they are facilitated by protein
they are "pumped" through
they undergo pinocytosis

5. Which statement(s) corresponds to cellular respiration? (can be multiple answers)

-CO2 diffuses passively into the cell
-CO2 diffuses passively out of the cell
-CO2 must be pumped out of the cell
-O2 diffuses passively when produced inside the cell
-O2 diffuses passively and then is converted to CO2
-O2 is pumped in and forces CO2 out

6. The cell mechanism of "active transport" involves the transport of insoluble chemicals across the membrane with protein acting as the carrier.

-True
-False

Answer 1

. #3 is diffusion and #4 is they are nonpolar and soluble. #5 is CO2 diffuses passively out of the cell and O2 in respiration is converted to water. O2 diffuses in to the cell.

Answer 2

1:D
2:a
3:d
4:c
5:b
6:True