DNA Biology help please

Question

Question #1

In the Watson-Crick model of DNA the "sides" of the ladder are composed of?

A) Sugars

B) Bases

C) Hydrogen Bonds

D) Sugar-phosphate molecules

Question #2

A Nucleotide contains?

A) DNA and RNA

B) A sugar, phosphate, and a nitrogenous base

C) Complementary purines and pyrimidines

D) RNA, protein, and lipids

E) a sugar, a phosphate, and a nitrogen base

Thank you in advance for help!!!

Answer 1

1. D

2. E