what is an example of active transport in the body?

Answer 1

Active transport is used to:

1. Generate charge gradients. For example in the mitochondrion, hydrogen ion pumps pump hydrogen ions into the intermembrane space of the organelle as part of making ATP.

2. Concentrate ions, minerals and nutrients inside the cell that are in low concentration outside.

3. Keep unwanted ions or other molecules out of the cell that are able to diffuse through the cell membrane.

In all these cases the key is that active transport uses energy to send substances against the direction they would travel by simple diffusion: that is from a region of low concentration to a region of high concentration.

Answer 2

Transportation of oxygen to the muscles in the body by way of blood.
I think that would qualify as active transportation in the body.

Maybe osmosis would also qualify.

I hope this is the kind of answer you were looking for

Answer 3

anything that will not cross over selectively permeable membranes naturally or anything that need to go against concetration flow

think protein channels