Answer:
a.) is chemical because know the sugar and water are fused together and the chemical com-bond changed
b.) physical, because they will not mix
Explanation:
Id say C. It makes the most sense to me.
The activity of some enzymes requires vitamins. This is because vitamin derivatives contribute to the biochemical mechanisms of these enzymes. These vitamin derivatives belong to a class of molecules known as cofactors, which are organic molecules (called coenzymes) or metallic ions, that assist in the catalytic activity of an enzyme.
Because it t<span>akes in nutrients, breaks them down, and creates energy rich molecules for the cell. </span>
The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere.
