Pearson Edexcel IGCSE · Biology

Food production: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Food production.

10 questions24 marksFree, no account

Question 1

1 mark

Yeast is used in the commercial production of bread. Which product of its anaerobic respiration is responsible for causing the dough to rise?

Question 2

1 mark

The diagram shows an industrial fermenter used to grow microorganisms. Why is it essential to maintain aseptic conditions inside the fermenter?

Question 3

1 mark

In fish farming, why is it common practice to separate fish of different sizes within the same species?

Question 4

1 mark

Which of the following micro-organisms is used in the commercial production of yoghurt to ferment milk?

Question 5

1 mark

In an industrial fermenter used for the production of penicillin, the temperature must be strictly controlled. What is the primary biological reason for maintaining an optimum temperature?

Question 6

2 marks

How do polythene tunnels contribute to an increase in the yield of crops such as strawberries?

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Question 7

3 marks

Identify one advantage and one disadvantage of using biological control instead of chemical pesticides to manage pests.

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Question 8

5 marks

Explain the importance of the water cooling jacket in an industrial fermenter used for the large-scale production of penicillin.

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Question 9

4 marks

A farmer uses a glasshouse to grow tomatoes during the winter.
a) Explain how glasshouses can be used to increase the yield of these crops.
b) Why might a farmer use a polythene tunnel instead of a glasshouse for certain crops?

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Question 10

5 marks

The diagram shows a fish farming cage used to rear salmon in a loch. The setup includes different nets and a feeding system.
a) Explain how interspecific predation is controlled in this system.
b) Describe how farmers maintain high levels of oxygenation in the water for the fish.

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