The basic building block of life is the cell the atom the organelle dna

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

While washing her hair olivia noticed that she was losing a lot of hair she visited a clinic and the physician reassured her that her hair would grow back how do you think olivias hair will grow back