Chargaff's rules dictate that if DNA is made of 35% Adenine, which other nucleotide must be 35%? A) Thymine B) Cytosine C) Guanine D) Uracil PLEASE HELP ME

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.