Some b-vitamins act as coenzymes during the metabolism of protein, fat, and carbohydrates for energy. fill in the blank about coenzymes. the b-vitamin is part of two coenzymes that break down glucose, fatty acids, and amino acids.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

sex cells are usually half's then they find another half and make a fertilize egg