Cellular Transport

Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane?

• Substances are moving rapidly across the cell membrane.

• ATP is being rapidly consumed near the cellular membrane.

• Substances are moving from high to low concentrations.

• Substances are moving through channels in the cell membrane.

What type of transport requires no energy and includes diffusion and osmosis?

• Passive Transport

• No Transport

• Active Transport

• Victory Transport

What term is used to describe the diffusion of water across a membrane?

• Simple diffusion

• Osmosis

• Active Transport

• Endocytosis

A freshwater plant is placed in a container of saltwater. What will most likely happen to the cells of the plant?

• They will swell because water will move into them.

• They will swell because salt will move into them.

• They will shrink because water will move out of them.

• They will shrink because salt will move out of them.

The cell membrane is constructed mainly of

• protein pumps

• carbohydrate gates

• free-moving proteins

• phospholipids and transport proteins

A substance that moves across a cell membrane without using the cell's energy tends to move

• away from the area of equilibrium.

• away from the area where it is less concentrated.

• away from the area where it is more concentrated.

• toward the area where it is more concentrated.

Which statement best describe the expected result when a typical cell is placed into fresh water?

• Active transport of water into the cell would begin.

• There would be a net movement of water into the cell.

• Water would move out of the cell.

• No change in the cell's water content would occur.

Which cell part controls what enters and leaves the cell?

• Cell Wall

• Nucleus

• Cell Membrane

• Vacuole

Which organelle helps unicellular organisms, such as the paramecium to maintain homeostasis in a freshwater environment?

• Contractile Vacuole

• Cytoplasm

• Cell Wall

• Cell Membrane

What would happen to a red blood cell placed in distilled water?

• The cell would lose water and shrivel.

• The cell would gain water, swell and burst.

• The cell would gain and lose water equally.

• Nothing would happen.