| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.SL.TZ1.8 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 8 | Adapted from | N/A |
Question
The graph below shows the effect of substrate concentration on enzyme activity. What conclusion can be drawn about section X of the graph?
A. The enzyme has started to denature and the reaction slows down.
B. The reaction has finished and the substrate has been used up.
C. The enzyme is saturated and is working at its maximum reaction rate.
D. Some of the enzyme has been consumed and the reaction has reached a plateau. .
Markscheme
C
Examiners report
N/A
Syllabus sections
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