Enzyme practical activity quiz

John Loughlin
Quiz by John Loughlin, updated 5 months ago
John Loughlin
Created by John Loughlin 5 months ago
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Description

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

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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