Biochem Module 6 Exam, AI Verified Answers, 100% Correct

Biochem Module 6
1. In DNA, adenine always pairs with ________.
- Thymine
- Guanine
- Uracil
- Cytosine: - Thymine
2. DNA is built from which of the following?
- Nucleosides
- Genes
- Purines
- Nucleotide
- Codons: - Nucleotide
3. The double helix of DNA is stabilized mainly by
__________.
- Ionic bonds
- Covalent bonds
- Ion-dipole bonds
- Hydrogen bonds
- Hydrogen covalent bonds: - Hydrogen bonds
4. Which of the following pentose sugars is a
constituent of DNA?

, - Xylose
- Ribitol
- 2-deoxyribose
- Arabinose
- Ribose: - 2-deoxyribose
5. Pyrimidines have ________ ring(s), (each)
containing ______ nitrogen(s),
whereas purines have ________ ring(s), (each)
containing ______ nitrogen(s).
- 1; 1; 1; 1
- 1; 2; 2; 2
- 2; 2; 1; 2
- 2; 1; 1; 2
- 2; 2; 1; 1: - 1; 2; 2; 2
6. Identify the base guanine from among the
following structures.: 5 NH in rings with a double
bonded O
7. Which of the following nucleic acids is
responsible for using the encoded
genetic information to produce of proteins found in
living organisms?
- Peptide nucleic acid