Biology, asked by tnjakangwa, 3 months ago

some substances are absorbed into the ca[pillaries by active uptake.
explain why active uptake is sometimes necessary?

Answers

Answered by nikhil8239
0

Answer:

Particles in a liquid and a gas move continuously. Because of this movement, particles will spread themselves evenly throughout a liquid or a gas.

If there is a situation where particles of a substance are in a higher concentration, they will therefore move from this region to where they are in a lower concentration. This is called diffusion.

It is important to remember that the particles:

will move in both directions, but there will be a net movement from high to low concentration

will end up evenly spread throughout the liquid or gas but will continue to move

Explanation:

Similar questions