Test Bank Principles of Biochemistry 5th Edition Moran, Horton, Scrimgeour _ Perry Practice Questions _ Verified Answers .pdf

Test Bank
Principles of Biochemistry 5th Edition –
Moran, Horton, Scrimgeour & Perry Practice
Questions & Verified Answers
Principles of Biochemistry (Original Practice Exam)

Questions (A–D + Answers + Explanations)


🧬 Amino Acids & Proteins
1. The building blocks of proteins are:

A. Nucleotides​
B. Amino acids​
C. Fatty acids​
D. Monosaccharides

Answer: B




2. Peptide bonds form between:

,A. Two sugars​
B. Amino and carboxyl groups​
C. Two lipids​
D. Phosphate groups

Answer: B




3. Protein primary structure refers to:

A. Folding pattern​
B. Amino acid sequence​
C. Helix shape​
D. Sheet structure

Answer: B




4. Alpha helix is an example of:

A. Primary structure​
B. Secondary structure​
C. Tertiary structure​
D. Quaternary structure

Answer: B




5. Beta-pleated sheets are stabilized by:

A. Covalent bonds​
B. Hydrogen bonds​
C. Ionic bonds​
D. Peptide bonds

Answer: B




6. Tertiary structure refers to:

A. Amino acid sequence​
B. 3D folding of a protein​

, C. Protein subunits​
D. DNA structure

Answer: B




7. Quaternary structure involves:

A. Single chain folding​
B. Multiple protein subunits​
C. DNA folding​
D. RNA transcription

Answer: B




8. Denaturation of proteins results in:

A. Increased activity​
B. Loss of structure​
C. DNA replication​
D. Enzyme activation

Answer: B




9. Which amino acid is nonpolar?

A. Glycine​
B. Lysine​
C. Aspartate​
D. Glutamate

Answer: A




10. Enzymes are:

A. Lipids​
B. Catalytic proteins​
C. Carbohydrates​
D. DNA molecules