PROTEIN CHEMISTRY QUIZ 2
Multiple Choice Questions (MCQs) 5. Which amino acid is achiral?
1. Which type of protein is generally insoluble in an a. Alanine
aqueous environment?
b. Valine
a. Globular proteins
c. Glycine
b. Transport proteins
d. Cysteine
c. Fibrous proteins
d. Enzymes
6. Which form of an amino acid carries both positive and
negative charges at neutral pH?
2. Which law is used to determine the configuration of a. Cationic form
amino acids?
b. Anionic form
a. Beer-Lambert Law
c. Nonionic form
b. CORN Law
d. Zwitterion form
c. Dalton’s Law
d. Avogadro’s Law
7. How many peptide bonds are present in a polypeptide
consisting of 245 amino acids?
3. What is the average molecular weight of an amino acid a. 244
residue in a protein after peptide bond formation?
b. 245
a. 128
c. 246
b. 110
d. 243
c. 18
d. 150
8. Who pioneered the use of computational methods in
biochemistry?
4. What kind of proteins help Antarctic fish to survive in a. Dr. Kwadwo Asamoah Kusi
freezing temperatures?
b. Dr. Margaret Oakley Dayhoff
a. Thermophilic proteins
c. Dr. Francis Crick
b. Antifreeze proteins
d. Dr. James Watson
c. Enzymatic proteins
d. sweet proteins
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, BCMB322 Prep questions
9. Which secondary structure is most common in fibrous 13. What kind of proteins are formed by the
proteins? condensation of amino acids?
a. Alpha helices a. Polysaccharides
b. Beta sheets b. Nucleic acids
c. Random coils c. Peptides
d. Mixed secondary structures d. Lipids
10. What property of tryptophan and tyrosine is utilized 14. The CORN law helps in identifying the configuration
in protein quantification? of which carbon in amino acids?
a. High solubility a. Alpha carbon
b. Fluorescence b. Beta carbon
c. Ultraviolet light absorption c. Gamma carbon
d. Thermal stability d. Delta carbon
11. Which proteins are classified as having a mobile or 15. Which protein structure level involves the folding of
dynamic function? the polypeptide into a functional 3D shape?
a. Fibrous proteins a. Primary
b. Structural proteins b. Secondary
c. Globular proteins c. Tertiary
d. sweet proteins d. Quaternary
12. Which amino acid does not possess a side chain that 16. Which protein class is primarily involved in transport
interacts with water at pH 7? functions within the body?
a. Serine a. Fibrous proteins
b. Alanine b. Enzymes
c. Lysine c. Hormones
d. Aspartic acid d. Globular proteins
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