I believe it is DNA: deoxyribonucleic acid
Answer:
AT, CG, CG, AT, CG
Explanation:
Hi, the answer is the last one, AT, CG, CG, AT, CG.
When we read the question, it says base pairings of a DNA sample in her lab. The only base pairs in DNA is A, T, C, and G.
A is complementary to T, and C is complementary to G.
Therefore, you can eliminate the first three.
Hope this helps you!
Answer:
because when oxygen atom bonds with two hydrogen atoms they form water
Explanation:
A water molecule is formed by covalent bonds between an oxygen atom and two hydrogen atoms. The bond between hydrogen and oxygen involves unequal sharing of electron – it is a polar covalent bond. This is because the nucleus of the oxygen atom is more attractive to electrons than the nuclei of the hydrogen atom.
