Cell Membrane Structure and Function Quiz

What is the main function of the cell membrane?

• To produce energy for the cell

• To protect the cell’s components from the environment

• To store genetic material

• To help the cell divide

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NGSS.MS-LS1-2

Which process involves the movement of water across a cell membrane as a type of passive transport?

• Osmosis

• Diffusion

• Facilitated Diffusion

• Endocytosis

What is facilitated diffusion?

• The movement of ions and larger molecules through protein channels in the cell membrane

• The movement of water molecules only through the cell membrane

• The movement of substances against the concentration gradient

• The process of cell division

During facilitated diffusion, in which direction do substances move along the concentration gradient?

• From low to high concentration

• From high to low concentration

• In both directions equally

• Not related to concentration gradient

Which of the following best explains why facilitated diffusion is important for cells?

• It allows ions and large molecules to enter or exit the cell quickly

• It helps the cell divide

• It produces energy for the cell

• It breaks down waste products

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NGSS.HS-LS1-3

What is the function of aquaporins in the cell membrane?

• They facilitate the diffusion of water across the membrane

• They transport oxygen into the cell

• They break down waste products

• They produce energy for the cell

Why are aquaporins necessary for water movement in cells?

• Because the hydrophobic interior of the membrane makes it difficult for water to pass through unaided

• Because water molecules are too large to fit through the membrane

• Because the cell membrane is impermeable to all molecules

• Because aquaporins use energy to pump water into the cell

Explain how osmosis helps maintain balance in cells.

• By moving water to equalize solute concentration on both sides of the membrane.

• By producing energy for cellular activities.

• By transporting large molecules into the cell.

• By breaking down toxins in the cell.

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NGSS.HS-LS1-3

What is the force produced by the net movement of water out or into a cell called?

• Osmotic pressure

• Atmospheric pressure

• Hydrostatic pressure

• Blood pressure

Which of the following can tonicity cause in cells?

• Cells to divide

• Cells to swell or shrink

• Cells to change color

• Cells to stop functioning

Tags

NGSS.HS-LS1-3