John Loughlin
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Quiz on Enzyme practical activity quiz, created by John Loughlin on 11/11/2019.

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John Loughlin
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Enzyme practical activity quiz

Enzyme practical activity quiz

Question 1 of 8 Question 1 of 8

1

Which of the following is the optimum pH for catalase in celery?

Select one of the following:

  • 13

  • 7

  • 3

  • 10

Explanation

Question 2 of 8 Question 2 of 8

1

Which of the following substances is the substrate for catalase?

Select one of the following:

  • Oxygen

  • Hydrogen peroxide

  • Water

  • Hydrochloric acid

Explanation

Question 3 of 8 Question 3 of 8

1

Washing up liquid is necessary in the enzyme experiments in order to:

Select one of the following:

  • Trap the oxygen produced

  • Keep the glassware clean

  • To ensure a colour change

  • To maintain the pH

Explanation

Question 4 of 8 Question 4 of 8

1

How many molecules of hydrogen peroxide can catalase break down per second?

Select one of the following:

  • 40 thousand

  • 40

  • 40 million

  • 40 billion

Explanation

Question 5 of 8 Question 5 of 8

1

What is the function of pH buffer?

Select one of the following:

  • To maintain the pH of a solution at a set value

  • To keep the temperature of the solution the same

  • To cause the enzyme to break down the hydrogen peroxide

  • To change the pH of a solution

Explanation

Question 6 of 8 Question 6 of 8

1

The function of a water bath is:

Select one of the following:

  • To maintain the temperature of a solution at a set value

  • To cause the enzyme to break down the substrate

  • To change the temperature of solutions

  • To maintain the pH of a solution

Explanation

Question 7 of 8 Question 7 of 8

1

What substance did you use to immobilise yeast cells?

Select one of the following:

  • Alginate

  • Jelly

  • Agar

  • Algae

Explanation

Question 8 of 8 Question 8 of 8

1

What substance did you use to solidify the beads of immobilised yeast?

Select one of the following:

  • Potassium chloride

  • Calcium chloride

  • Sodium chloride

  • Magnesium chloride

Explanation

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