Tutorial: Reviewing an Enzyme Experiment's Results
IELTS Listening Practice
hard
Audio
You can replay the recording as many times as you like while practising.
Questions
Question 1
Choose the correct letter, A, B or C.
1
The reaction rate peaked at
Question 2
Choose the correct letter, A, B or C.
2
At 50 degrees the rate dropped because
Questions 3–5
What was the likely cause of the problem at each temperature?
Options
- A. slow reaction time starting the timer
- B. the liver had dried out and was inconsistent
- C. the repeats were not done (missing data)
- D. the peroxide was too concentrated
- E. the thermometer was broken
3
the 10-degree reading (too high)
4
the 30-degree repeats (inconsistent)
5
the 50-degree reading (only one value)
Question 6
Choose the correct letter, A, B or C.
6
The anomalous point should be
Questions 7–8
Complete the sentences below.
7
The variables kept the same in every trial are called the ______ variables.(max 1 word)
8
The heat stops the enzyme working by causing it to become ______.(max 1 word)
0 / 8 answered