Casper is a horse training for the Grand National. Casper's diet contains an increased amount of carbohydrate. Casper runs several miles each day. (i) Use words from the box to complete the sentences. During training, Casper’s heart rate increases to supply his muscles with more __________. Casper’s breathing rate increases to remove excess __________. from his blood. (ii) Explain why Casper needs a diet containing an increased amount of carbohydrate.

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Casper is a horse training for the Grand National - Edexcel - GCSE Biology - Question 2 - 2012 - Paper 1

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Casper is a horse training for the Grand National. Casper's diet contains an increased amount of carbohydrate. Casper runs several miles each day. (i) Use words fro... show full transcript

Worked Solution & Example Answer:Casper is a horse training for the Grand National - Edexcel - GCSE Biology - Question 2 - 2012 - Paper 1

Step 1

Use words from the box to complete the sentences.

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Answer

During training, Casper’s heart rate increases to supply his muscles with more oxygen.

Casper’s breathing rate increases to remove excess carbon dioxide from his blood.

Step 2

Explain why Casper needs a diet containing an increased amount of carbohydrate.

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Answer

Casper needs a diet containing an increased amount of carbohydrate for several reasons:

He needs more energy for training and racing due to the physical demands placed on him.
Carbohydrates contain and release energy, which is essential for sustaining his performance.
Carbohydrates are broken down to glucose, which is used by cells for energy during respiration.
This process is facilitated by enzymes such as amylase, ensuring that the energy is readily available when needed.

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