Atoms are the most basic units
Elements are specific types of atoms
Compounds are composed of more than one type of element and are held together by chemical bonds
Answer:
B. C-G and A-T
Explanation:
The pairings are adenine and thymine and cytosine and guanine
The answer
is Up-regulation. One
of the best description of the process of up-regulation is an Increase
the number of surface receptors. Acts as
transcribing factor and binds to DNA, activating a gene. From binding to DNA
before a hormone binds to the receptor.