Cell Transport- Regents

Front

What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through various mechanisms such as diffusion, osmosis, and active transport.

Front

Define diffusion.

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What happens to a cell in a hypotonic solution?

Back

A cell in a hypotonic solution will swell and may burst (lyse) due to the influx of water.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from an area of low concentration to an area of high concentration, requiring energy (ATP).

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via special proteins, moving from high to low concentration without energy.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of molecules.

Front

How does water move in relation to solute concentration?

Back

Water moves from areas of low solute concentration to areas of high solute concentration.

Front

What is the role of the cell membrane in transport?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis through selective permeability.

Front

What is the difference between passive and active transport?

Back

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