BIOCHEM MODULE 8 EXAMPREP STUDY GUIDE FULLY SOLVED WITH VERIFIED SOLUTIONS 2026

BIOCHEM MODULE 8 EXAMPREP STUDY
GUIDE FULLY SOLVED WITH VERIFIED
SOLUTIONS 2026

⩥ DNA is built from which of the following?


- Nucleosides
- Genes
- Purines
- Nucleotide
- Codons. Answer: - Nucleotide


⩥ The double helix of DNA is stabilized mainly by __________.


- Ionic bonds
- Covalent bonds
- Ion-dipole bonds
- Hydrogen bonds
- Hydrogen covalent bonds. Answer: - Hydrogen bonds


⩥ Which of the following pentose sugars is a constituent of DNA?

,- Xylose
- Ribitol
- 2-deoxyribose
- Arabinose
- Ribose. Answer: - 2-deoxyribose


⩥ 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. Answer: - 1; 2; 2; 2


⩥ Identify the base guanine from among the following structures..
Answer: 5 NH in rings with a double bonded O


⩥ 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
- Ribonucleic acid
- Ribitol nucleic acid
- Deoxyribonucleic acid
- Glycerol nucleic acid. Answer: - Ribonucleic acid


⩥ Identify the complementary bases from the following.


- Adenine-Cytosine
- Adenine- Thymine
- Guanine-Thymine
- Guanine-Adenine
- Cytosine-Uracil. Answer: - Adenine- Thymine


⩥ How many hydrogen bonds are made between G and its
complementary nucleotide?


-1
-2
-3
-4