1. Aim: Describe the nutrients that are needed by the human body.
Topic: Nutrition
Aim: Describe the nutrients that are needed by the human body.
Do Now: Explain the three process involved in heterotrophic nutrition.
HW: Protist Activity due Monday.
Five food labels due Wednesday.

2. What are nutrients?
Substances in foods that provide energy and materials for life processes

3. How is energy measured in food?
Calories: amount of heat needed to raise 1 kg of water 1°C
How is energy measured in food?

5. 6 nutrients needed by the body

6. 1. Carbohydrates: main source of energy

7. Simple carbohydrates = sugars

8. Complex carbohydrates = starches & fiber

9. 2. Proteins: for replacement & growth and repair of body cells

11. Made up of many amino acids
Most are made in the body

12. Essential amino acids: 8 amino acids NOT made in the body

13. 3. Lipids: fats
Source of stored energy

14. Unsaturated fats: liquid at room temp
Vegetable oils

15. Saturated fats: solid at room temp
Associated with high cholesterol
In meats, animal products, butter

17. 4. Minerals: maintain bones, teeth, muscles and red blood cells
Ex: Calcium, phosphorus, iodine…

19. 5. Vitamins: maintain normal functioning of the body
Disease prevention

21. 6. Water: needed for maintenance of cytoplasm, blood and tissue fluid

23. 1. How is energy measured in food?
Review:
1. How is energy measured in food?
2. Identify the nutrient being described:
Main source of energy
Needed for repair and growth
Needed for maintaining normal body functioning
Makes up a large percentage of the blood and cytoplasm.
Made up of sugars, starch and fiber.
Stored source of energy.
Maintain bones, muscles and red blood cells.