Some farm animals are fed foods that are high in protein.
What is the main reason for this?
To reduce the amount of energy the animals use in respiration
To provide extra energy so the animals can keep themselves warm
To provide amino acids so that the animals grow more quickly
To make the animals less active so that they move around less
42 exam-style questions on AQA GCSE Biology 7.5 Food production, covering 7.5.1 Factors affecting food security, 7.5.2 Farming techniques, 7.5.3 Sustainable fisheries, and 7.5.4 Role of biotechnology. Each one has a worked solution and a mark scheme showing where the marks go.