Answer:
ecent advances in stem cell biology have changed the current face of.The embryonic development of mice and humans are considerably different and the mitophagy theory, thus proving once again that stem cell derived human.
Explanation:
Answer:
13
Explanation:
it get recycled again when it becomes old
That's called evolution. I'm not sure exactly what it's asking, but I hope this helps you
For the answer to the question above,
<span>DNA is made up of two nucleotide strands. The nucleotides are connected together by covalent bonds within each strand. The sugar of one nucleotide forms a covalent bond with the phosphate group of another. The two strands themselves are connected by hydrogen bonds. The hydrogen bonds are found between the bases of the two strands of nucleotides. Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine. This is called complementary base pairing</span>
