Balanced eating, breathing and transport of substances
Answers are for parents and teachers.
1
Write a one-day menu (4 meals) for yourself and mark the protein, carbohydrate, fat and vitamin foods.
Free answer; there should be at least one food from each group.
2
The daily need is 2400 kcal. If the extra snack is 10 percent, how many kcal?
240
3
Count and write your breaths and your pulse per minute at rest. How are the two related?
Depends on measurement: pulse is usually about 4–5 times the breath rate; both rise after exercise.
4
Explain in 2–3 sentences why a room should be aired, based on breathing.
When people breathe, oxygen falls and carbon dioxide rises; airing brings in fresh air.