cells are involved in fertilization. a.
diploid
c.
triploid
b.
haploid
d.
all of the above

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

answer increasing the intensity, duration,and frequency of exercise progressively;