Passive & Active Transport Review

Front

What is equilibrium in the context of cellular transport?

Back

Equilibrium refers to a state where there is an equal amount of substance on either side of the membrane.

Front

What is osmosis?

Back

Osmosis is a type of passive transport that moves water molecules from an area of high concentration to an area of low concentration.

Front

Where is the concentration of dye lowest in a solution?

Back

The concentration of dye is lowest at the bottom of the cup.

Front

What role do open proteins play in facilitated diffusion?

Back

Open proteins serve as channels that allow molecules to cross the cell membrane during facilitated diffusion.

Front

Define diffusion in biological terms.

Back

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

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

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 concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.

Front

What factors affect the rate of diffusion?

Back

The rate of diffusion is affected by concentration gradient, temperature, size of molecules, and the medium through which diffusion occurs.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of molecules.