Answer:
Three of the four nitrogenous bases that make up RNA — adenine (A), cytosine (C), and guanine (G) — are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine
Explanation:
Answer:
The cell would probably die in a short amount of time because the cell membrance protects the cell from hazardous materials. If it just let any substances in, the cytoplasm would be exposed to it.
Explanation:
<span>The question is which microscope is often use to view metal. The answer is scanning tunneling microscope. It is a high resolution microscope which uses neither light nor electron beam but it has very fine tip which has the ability to reveal the atomic and molecular details of metals. It was developed in 1981 by Gerd Binnig and Heinrich Rohrer.</span>
Answer:
They change their color so they wouln't be spotted by predators. Its like a self defence meckanisum ( i dont knwo how to spell) so they wouldn't get caught.
Explanation:
hope this helped
Answer:
See the explanation below. Thanks!
Explanation:
The structure of an amino acid allows it to act as both an acid and a base. An amino acid has this ability because at a certain 
value (different for each amino acid) nearly all the amino acid molecules exist as zwitter-ions. If acid is added to a solution containing the zwitter-ion, the carboxylate group captures a hydrogen (
) ion, and the amino acid becomes positively charged. If base is added, ion removal of the ion from the amino group of the zwitter-ion produces a negatively charged amino acid. In both circumstances, the amino acid acts to maintain the pH of the system—that is, to remove the added acid 
or base 
from solution.
