6th 2024 3.3 3.4 3.5 Form B Cells Chapter Test

Which of the following is a function of the cell membrane?

• stores water, salt, proteins, and carbohydrates
• keeps the cell wall in place
• regulates which materials enter and leave the cell

The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of?

• carbohydrates
• lipids
• proteins

2 and 3 are pointing to

• membrane protein
• phospholipids
• membrane carbohydrates

Diffusion is the movement of molecules from

• an area of low concentration to an area of high concentration.
• an area of high concentration to an area of low concentration.
• an area of equilibrium to an area of high concentration.

Side A is (assume the solute cannot move, only the water can move)

• Hypertonic
• Hypotonic
• Isotonic

Side B is (assume the solute cannot move, only the water can move)

• Hypertonic
• Hypotonic
• Isotonic

The following is an example of (assume the solute cannot move, only the water can move)

• Hypertonic
• Hypotonic
• Isotonic

Diffusion occurs because

• molecules constantly move and collide with each other.
• the concentration of a solution is never the same throughout a solution.
• the concentration of a solution is always the same throughout a solution.

The picture below is an example of (the blue dots represent an item that can pass over the membrane)

• osmosis
• diffusion
• active transport

The following diagram represents what

• simple diffusion
• facilitated diffusion
• time lapse diffusion