Question
The diagram represents the shape of an enzyme molecule.
With which substrate would this enzyme most easily form an enzyme-substrate complex?
Answer/Explanation
Ans
D
Question
The table shows the conditions in four test tubes containing equal amounts of starch and salivary
amylase.
In which test-tube is the starch broken down fastest?
Answer/Explanation
Ans
D
Question
The graph shows the activity of three digestive enzymes at differing pH levels.
Which statement is correct?
A Enzymes X and Y are both active at pH7.
B Enzymes X and Z are both active at pH4.
C Enzymes Y and Z are both active at pH4.
D Enzymes Y and Z are both active at pH8.
Answer/Explanation
Ans
D
Question
The diagram shows an experiment on the digestion of the protein in egg albumen by protease.
The protease was taken from a human stomach.
In which test-tube will the protein be digested most quickly?
Answer/Explanation
Ans: C
Question
The diagram represents enzyme action.
Answer/Explanation
Ans: C