1. SI,
2. Number 10.
I'm pretty sure it's that, I just did something related to that.
Nucleotides. DNA and RNA are polymers (in the case of DNA, often very long polymers), and are made up of monomers known as nucleotides. ... Each nucleotide is made up of three parts: a nitrogen-containing ring structure called a nitrogenous base, a five-carbon sugar, and at least one phosphate group.(Hoped this helped)
C. 8
Oxygen atom has 6 electrons in its outer shell. It becomes 8 after receiving two more electrons.
