Question

Carlos is studying different types of transport in cells. He learns that osmosis is a type of passive transport involving water molecules. Which statement correctly describes passive transport?
A.
molecules move from a lower concentration to a higher concentration
B.
all of the molecules outside a cell membrane move into the cell
C.
molecules cross the cell membrane without the use of energy
D.
all of the molecules outside a cell use energy to cross the cell membrane

Answer 1

Answer:

C.

Explanation:

passive transport does not require energy to be used, and it goes from a higher to a lower concentration.

Answer 2

Answer:

C = molecules cross the cell membrane without the use of energy

Explanation:

One way that cells maintain homeostasis is through passive transport. In this process, small molecules and ions cross the cell membrane without the input of energy from the cell.