The second stage of prenatal development begins at about two weeks after conception. at this point, the growing bundle of cells is called an embryo.
Answer:
dna to rna and then rna to protein
Explanation:
Calcium deficiency disease (hypocalcemia) --- like osteoporosis, osteopenia !!
<span>The correct answer:
copper is important in the synthesis of collagen.</span>
Copper activates an enzyme called lysyl oxidase that's required for collagen maturation.Lysyl oxidase catalyzes the formation of aldehydes from lysine residues in collagen and this results in cross-linking collagen (stabilization of collagen fibrils).
Growing a new spider plant from a plantlet is called vegetative reproduction.
