Final answer:
A concentration gradient is the change in solute concentration across a distance, while a chemical gradient is the change in concentration of specific chemicals across a biological membrane.
Step-by-step explanation:
In biology, a concentration gradient is a gradual change in the concentration of solutes in a solution across a distance. It is caused by the movement of particles from an area of higher concentration to an area of lower concentration. For example, in the process of diffusion, molecules move down their concentration gradient.
A chemical gradient, on the other hand, refers to the change in concentration of specific chemicals across a biological membrane. It can influence the movement of ions, such as sodium, potassium, and calcium, across the cell membrane through various transport proteins.
In summary, concentration gradient refers to the overall change in solute concentration, while chemical gradient specifically refers to the change in concentration of specific chemicals.
Learn more about Contrast between concentration gradient and chemical gradient