2.2 Cellular Transport

Multiple Choice

Which of the following molecules can pass through the cell membrane by simple diffusion?

• Large proteins

• Small nonpolar molecules like O2 and CO2

• Ions like Na+ and Cl-

• Glucose

Multiple Choice

Which of the following best describes a hypertonic solution in relation to a cell?

• It has the same solute and water concentrations as the cell.

• It contains more solutes than the cell.

• It contains fewer solutes (more water) than the cell.

• It contains no solutes at all.

Multiple Select

Which of the following statements about passive transport are correct?

• Osmosis is a type of passive transport.

• Facilitated diffusion uses transmembrane proteins.

• Passive transport requires ATP.

• All passive transport mechanisms move along the concentration gradient.

Fill in the Blanks

The sodium-potassium pump is an example of

active transport.

Open Ended

Explain the difference between endocytosis and exocytosis in terms of the direction of transport and the type of substances moved.

Multiple Choice

Which process transports substances out of the cell?

• Endocytosis

• Exocytosis

• Facilitated diffusion

• Osmosis

Multiple Choice

What is the main function of motor proteins in intracellular transport?

• Form connecting tracks within the cell

• Move along the cytoskeleton to transport materials

• Regulate osmosis

• Facilitate diffusion across the membrane

Open Ended

How does the concept of selective permeability in the cell membrane relate to the process of passive transport?