The answer is D
Explanation: You need to have the same number of complementary bases.
Well everything is made of complex proteins. There isn't one single organism just comprised of proteins. For example keratin is a protein that is made when RNA passes through a ribosome. Now this protein may be used in different functions, one is to strengthen hair/nails. To simplify: anything living that is eukaryotic. (multi_cellular organisms bigger than bacteria and viruses.)
Answer:
I think it would be an organ! sorry if not
Answer: b
Explanation:vcdfghmnb vcxdcfvb
I'm at a loss between A & C but I'm not sure, I'd go with A
