Answer:
. A DNA molecule in a human chromosome can be up to 250 million nucleotide-pairs long; in contrast, most RNAs are no more than a few thousand nucleotides long, and many are considerably shorter.
Answer:
D but I'm not completely sure
Answer: Mitosis is the process of dividing a cell and its nucleus into two cells which each have their own nucleus. An example of mitosis is the way the skin cells covering a child's body all multiply while they are growing.
Answer:
A
Explanation:
moves molecules against their concentration gradient, from a high concentration to a low concentration.