(a) Name the two main types of carbohydrates found in food. [2] (b) State three functions of carbohydrates in the body. [3] (c) Give two examples of foods t...
Question 1 Report
(a) Name the two main types of carbohydrates found in food. [2]
(b) State three functions of carbohydrates in the body. [3]
(c) Give two examples of foods that are good sources of starch. [2]
(d) Explain why a person who does a lot of physical exercise needs more carbohydrates for energy in their diet than a person who does very little exercise. [4]
Answer Details
(a) Name the two main types of carbohydrates. [2]
- Sugars (simple carbohydrates) (1)
- Starches (complex carbohydrates) (1)
(b) State three functions of carbohydrates in the body. [3]
One mark each (max 3):
- To provide energy for the body (1)
- To provide warmth/heat (1)
- To provide dietary fibre for healthy digestion (1)
- Excess is stored as fat for later use (1)
(c) Give two examples of foods that are good sources of starch. [2]
One mark each (max 2):
- Bread (1)
- Rice (1)
- Pasta (1)
- Potatoes (1)
- Cereals (1)
(d) Explain why a person who does a lot of physical exercise needs more carbohydrates. [4]
One mark for each valid point (max 4):
- Physical exercise uses up large amounts of energy (1)
- Carbohydrates are the body's main source of energy (1)
- The body breaks down carbohydrates into glucose for immediate energy use (1)
- Without enough carbohydrates, the body would break down protein or fat for energy, which is less efficient (1)
- Athletes need to replace glycogen stores in muscles after exercise (1)
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