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20140562
Enzyme practical activity quiz
Description
Quiz on Enzyme practical activity quiz, created by John Loughlin on 11/11/2019.
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junior certificate
Quiz by
John Loughlin
, updated more than 1 year ago
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Created by
John Loughlin
over 4 years ago
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Resource summary
Question 1
Question
Which of the following is the optimum pH for catalase in celery?
Answer
3
7
10
13
Question 2
Question
Which of the following substances is the substrate for catalase?
Answer
Water
Oxygen
Hydrogen peroxide
Hydrochloric acid
Question 3
Question
Washing up liquid is necessary in the enzyme experiments in order to:
Answer
Keep the glassware clean
Trap the oxygen produced
To ensure a colour change
To maintain the pH
Question 4
Question
How many molecules of hydrogen peroxide can catalase break down per second?
Answer
40
40 thousand
40 million
40 billion
Question 5
Question
What is the function of pH buffer?
Answer
To change the pH of a solution
To maintain the pH of a solution at a set value
To cause the enzyme to break down the hydrogen peroxide
To keep the temperature of the solution the same
Question 6
Question
The function of a water bath is:
Answer
To change the temperature of solutions
To maintain the temperature of a solution at a set value
To maintain the pH of a solution
To cause the enzyme to break down the substrate
Question 7
Question
What substance did you use to immobilise yeast cells?
Answer
Alginate
Algae
Agar
Jelly
Question 8
Question
What substance did you use to solidify the beads of immobilised yeast?
Answer
Sodium chloride
Magnesium chloride
Potassium chloride
Calcium chloride
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