Question
What is the primary function of the free ribosomes shown in the electron micrograph?
A. Synthesize proteins to be used within the cell
B. Synthesize proteins for use in lysosomes
C. Carry amino acids to mRNA for protein synthesis
D. Synthesize proteins for secretion
▶️Answer/Explanation
Ans:A
Question
Which types of interactions are found in a part of a protein with secondary but not tertiary structure?
I. Hydrogen bonds
II. Disulphide bridges
III. Ionic bonds
A. I only
B. I and II only
C. II and III only
D. I, II and III
▶️Answer/Explanation
Ans:A
Question
This DNA sequence was used to synthesize a polypeptide.
DNA (sense strand): 3′ T A C T G A 5′
DNA (template strand): 5′ A T G A C T 3′
Which are the bases of the tRNA (anticodons)?
A. T A C T G A
B. U A C U G A
C. A U G A C U
D. A T G A C T
▶️Answer/Explanation
Ans:C