Cell Transport Semester Test Review

Refer to the illustration below. The structure that acts as a gate to the cell's interior is labeled ___.

• A

• B

• C

• D

• E

Tags

NGSS.MS-LS1-2

The dispersal (spreading) of air freshener in a room is an example of

• osmosis

• diffusion

• endocytosis

• active transport

Molecules move in and out of a cell by a process called passive transport. How will the molecules in this diagram move?

• The molecules will move into the cell.

• The molecules will move out of the cell.

• The molecules will not move.

• The molecules move into the cell, and then immediately move out of the cell.

Tags

NGSS.MS-LS1-2

The cell membrane of the red blood cell will allow water, oxygen, carbon dioxide, and glucose to pass through. Because other substances are blocked from entering, this membrane is called ___.

• perforated

• semi-permeable

• non-conductive

• permeable

Which of the following statements concerning diffusion and active transport is correct?

• Active transport requires cell energy while diffusion does not.

• Diffusion requires cell energy while active transport does not.

• Both diffusion and active transport require cell energy.

• Neither diffusion nor active transport require cell energy.

Which phrase best describes the property of selective permeability?

• Some molecules pass

• All molecules pass

• Only large molecules pass

• No molecules pass

A patient has had a serious accident and lost a lot of blood. In an attempt to replenish body fluids, distilled (pure) water is transferred directly into one of his veins. What will be the most probable result?

• It will have no effect, as long as the water is free of viruses and bacteria.

• The patient's red blood cells will shrivel up because the blood fluid has become hypotonic compared to the cells.

• The patient's red blood cells will swell because the blood fluid has become hypotonic compared to the cells.

• The patient's red blood cells will shrivel up because the blood fluid has become hypertonic compared to the cells.

Tags

NGSS.HS-LS1-3

In the image below, how would the solution be classified and in what direction will water move? (The solute cannot pass through the cell membrane.)

• The solution is hypertonic and water will move out of the cell.

• The solution is hypotonic and water will move out of the cell.

• The solution is hypertonic and water will move into the cell.

• The solution is hypotonic and water will move into the cell.

Which of the following statements is correct about diffusion?

• It is a completely random process.

• It requires energy from the cell.

• It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.

• It is an active process in which molecules move from a region of lower concentration to a region of higher concentration.

Water enters a cell when the solution surrounding the cell is ___.

• concentrated

• weak

• hypertonic to the cell

• hypotonic to the cell