Question
Which reaction occurs when a dipeptide is formed from amino acids?
A. Hydrolysis
B. Condensation
C. Transcription
D. Oxidation
Answer/Explanation
Question
The graph shows enzyme activity plotted against temperature.
What is the reason for the drop in enzyme activity above 40°C?
A. A decrease in the enzyme concentration
B. Reaction is saturated because active sites are occupied
C. Insufficient activation energy for the reaction to proceed
D. Changes to the conformation of the enzyme
Answer/Explanation
Question
A molecule of DNA is found to contain 200 guanine bases, representing 25% of the total number
of bases. How many phosphate groups does this molecule of DNA contain?
A. 50
B. 200
C. 800
D. 1000
Answer/Explanation
Question
Which feature(s) allow(s) transport of glucose in blood plasma?
I. It is hydrophobic.
II. It is polar.
III. Its solubility is low at 37°C.
A. I only
B. II only
C. I and II only
D. II and III only