AP BIOLOGY

Detailed explanation-1: -The difference in the concentration of a substance between two areas is called the concentration gradient . The bigger the difference, the steeper the concentration gradient and the faster the molecules of a substance will diffuse. The direction of diffusion is said to be ‘down’ or ‘with’ the concentration gradient.

Detailed explanation-2: -A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.

Detailed explanation-3: -The concentration profile describes the distribution of concentration (e.g., of a specific compound) over a certain distance. The gradient is the slope of one particular point of a concentration profile.

Detailed explanation-4: -A gradient is a measurement of how much something changes as you move from one region to another. So a concentration gradient is a measurement of how the concentration of something changes from one place to another.

Detailed explanation-5: -In biology, a difference in concentration is referred to as a concentration gradient. Concentration gradients are important because they help us predict which way molecules will move according to diffusion.