1. Healthy diet

2. Respiration What is respiration Where does respiration happen?
What is the word equation for respiration?

3. Respiration What is respiration The release of energy from glucose
Where does respiration happen?
In all cells of the body
What is the word equation for respiration?
Glucose + oxygen -> carbon dioxide + water

4. Put in order

5. Put in order

6. A balanced diet

7. How much of each food group should you eat?
Use in body
Carbohydrates
Energy
Fats and oils
Energy (more energy that carbohydrates)
Protein
Growth and repair
Vitamins and minerals
Staying healthy

8. Calories
Calorie is a measure of the amount of energy required to raise the temperature of one gram of water by 1 °C. The kilocalorie (kcal) is the amount of energy needed to increase the temperature of one kg of water by 1 °C.

9. Which of these need more energy?
Woman Man
Men 2500 calories
Women 2000 calories
How would their diets vary?

10. Which of these need more energy?
Pregnant woman Woman
How would their diets vary?

11. Which of these need more energy?
Athlete Couch potato
How would their diets vary?

12. Which of these need more energy?
Male teenager Male old age pensioner
How would their diets vary?

13. Which of these need more energy?
Eskimo Desert dweller
How would their diets vary?

14. Metabolic rate
Even if people are similar in age, sex and size they may still need different amounts of energy in their diet, WHY? What is metabolic rate? Metabolic rate is the rate at which chemical reactions in your body cells happen (determined by our genetics!!!). Where in a cell does chemical reactions occur?

15. Would these two people vary in the amount of energy they need?
Yes, because they have different genes and therefore
metabolic rates!!!!
Same age & sex, same fitness, both exercise, similar mass

16. What effects how much energy you need?
Metabolic rate is the rate at which chemical reactions in your body cells happen (determined by our genetics!!!). Where in a cell does chemical reactions occur? Exercise, fitness, age, metabolic rate, gender, Genetic factors, environment, body mass

17. Comparing metabolic rates Explain the graph, what does this show?

18. Metabolic rate In your books write: What is metabolic rate?
Sort the people you have been given into groups based on metabolic rate and energy requirement

19. least energy
most energy

21. Can we see respiration?

22. carbon dioxide
energy
water +
oxygen
glucose
carbon
dioxide
glucose
oxygen
water
energy

23. Comparing the energy content of two foods Food 1 Food 2
Temperature of water at start oC
Temperature of water at end
Change in temperature