Question

what is a form of passive transport? *
a. diffusion
b. osmosis
c. facilitated diffusion
d. all of the above
what solution will cause a cell to swell? *
a. hypotonic
b. isotonic
c. hypertonic
what solution will cause a cell to shrink? *
a. hypotonic
b. isotonic
c. hypertonic

Explanation:

First Question: What is a form of passive transport?

Passive transport is the movement of substances across a cell membrane without the use of energy. Diffusion (movement of particles from high to low concentration), osmosis (diffusion of water), and facilitated diffusion (diffusion with the help of transport proteins) all fall under passive transport as they do not require energy input. So all the options A, B, and C are forms of passive transport, making D the correct choice.

In a hypotonic solution, the concentration of solutes outside the cell is lower than inside the cell. As a result, water moves into the cell (by osmosis) to balance the solute concentration, causing the cell to swell. An isotonic solution has equal solute concentrations inside and outside, so no net water movement. A hypertonic solution has a higher solute concentration outside, causing water to leave the cell and the cell to shrink.

A hypertonic solution has a higher concentration of solutes outside the cell compared to inside. This causes water to move out of the cell (osmosis) to balance the solute concentration, leading to the cell shrinking. A hypotonic solution causes swelling, and an isotonic solution has no net water movement.

Answer:

D. All of the above

Second Question: What solution will cause a cell to swell?