What must happen to a chromosome before a cell starts mitosis? What must happen to a chromosome before a cell starts mitosis? A. The two chromatids of the chromosome must become attached to each other. B. Both molecules of DNA in the chromosome must be replicated. C. The chromatin of the chromosome must be completely condensed. D. The single DNA molecule in the chromosome must be replicated.

The DNA must be replicated first to be a whole chromosome since at the previous division it was only a set of two "half" chromosomes.

Explanation:

Mitosis never replicates DNA which is split in half in a set pattern every replication to prevent mutations.

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.  

in addition to being able to metabolize, grow, digest food, and excrete wastes, what other functions must an organism perform if it is to survive? survival also depends on the ability to maintain one's boundaries, to move, to respond to stimuli, and to reproduce. oxygen is a survival need.