I have to find the correct term that best fits each definition.

Question

1)The "transforming factor" that alters pneumonia bacteria
2)The three parts of every nucleotide
3)A pair of these forms a "rung" in the DNA ladder
4)Used to "label" DNA and protein in experiments
5)The component of a bacteriophage that enters the host cell
6)The substance a phage leave outside of its host cell
7)Attacked by herpes virus
8)A bacterium attacked by T2 phages
The sequence of these encodes DNA information
9)Eukaryotic chromosomes consist this and DNA
10)Links adjacent nucleotides in a polynucleotide chain
11)Links a complementary pair of bases together
I've read the chapter, but still need help. If I find answers to any of these on my own I will post them to see if they are right. If anyone knows a good website, please let me know. My grade is depending in this! Thanks!

Answer 1

I think number 10 is covalent bonds and number 11 is hydrogen bonds.

Answer 2

I also think the number 9 is RNA.