What is a mutation?
a. a change in a gene which is harmful, beneficial, or has no effect at all.
b. a change in a gene which is only harmful.
c. a change in a gene which is only harmful.
d. no change in a gene.

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion