Passive Transport Review

Front

What is equilibrium in the context of passive transport?

Back

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

Front

Define osmosis.

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration.

Front

What is diffusion?

Back

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

Front

What happens to water movement when the concentration of water is equal inside and outside a cell?

Back

There will be no movement of water into or out of the cells.

Front

What does it mean for a cell to be selectively permeable?

Back

A selectively permeable cell allows some substances to pass through while blocking others.

Front

What is the role of a semi-permeable membrane in osmosis?

Back

A semi-permeable membrane allows only certain molecules, like water, to pass through while restricting others.

Front

How does concentration gradient affect diffusion?

Back

Molecules will naturally move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is the difference between passive transport 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 factors can affect the rate of diffusion?

Back

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

Front

What is facilitated diffusion?

Back

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