Cell Transport

Front

What is equilibrium in the context of cell transport?

Back

Equilibrium is the state when the molecules of one substance are spread evenly throughout another substance, resulting in no net movement of molecules.

Front

What is osmosis?

Back

Osmosis is the type of passive transport that occurs when water diffuses through a cell membrane.

Front

What is passive transport?

Back

Passive transport is the movement of substances through the cell membrane without the input of energy.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.

Front

How does osmosis differ from diffusion?

Back

Osmosis specifically refers to the diffusion of water across a selectively permeable membrane, while diffusion can refer to the movement of any type of molecule.

Front

What role do cell membranes play in transport?

Back

Cell membranes control the movement of substances in and out of the cell, allowing for selective permeability.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass while blocking others.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy input.

Front

Can you give an example of passive transport?

Back

An example of passive transport is the movement of oxygen from the lungs into the bloodstream.

Front

What is the significance of gas exchange in alveoli?

Back

Gas exchange in alveoli is crucial for supplying oxygen to the blood and removing carbon dioxide from it.