Cell Transport

Front

What happens to a cell when it is placed in a solution with a high salt concentration?

Back

The cell will most likely shrink due to osmosis, as water moves out of the cell to balance the salt concentration.

Front

What is the function of a protein pump in cell transport?

Back

A protein pump actively transports ions or molecules across the cell membrane against their concentration gradient, requiring energy.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move substances like glucose across the cell membrane without using energy.

Front

What is endocytosis?

Back

Endocytosis is a form of transport used to move very large molecules or particles into the cell by engulfing them in a membrane.

Front

Does passive transport require energy?

Back

No, passive transport does not require energy; it relies on the natural movement of molecules down their concentration gradient.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances down their concentration gradient.

Front

What role do transport proteins play in cell transport?

Back

Transport proteins facilitate the movement of substances across the cell membrane, either through passive or active transport mechanisms.

Front

What is the significance of the concentration gradient in cell transport?

Back

The concentration gradient is the difference in concentration of a substance across a membrane, driving the movement of molecules during diffusion and osmosis.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel large molecules or particles by enclosing them in a vesicle that fuses with the cell membrane.