Nutrition+hw+1+JM

1. What is the usual function of various carbohydrates in humans? 3. What is starch? What is the source of starch? 4. What is "fiber" and of what benefit is it in the diet? 5. Why does low-carb dieting work sometimes? But what are the risks? 6. What is the function of fats and oils? DESCRIBE EXAMPLES 7. What are fats and oils composed of? 8. What is the difference between a saturated and unsaturated fat? DESCRIBE EXAMPLES 9. What are the uses of phospholipids in the body? DESCRIBE EXAMPLES 10. What are the uses of steroids in the body? DESCRIBE EXAMPLES 11. Why do we need fat in our diet? DESCRIBE EXAMPLES 12. What are the major functions of proteins in organisms? DESCRIBE EXAMPLES 13. What is the subunit of a protein? How do they get their name? 14. How does the shape of a protein relate to its function? DESCRIBE EXAMPLES
 * the usual function of carbohydrates in humans is a short term energy source.
 * 2. What is the difference between a simple carbohydrate and a complex carbohydrate? DESCRIBE EXAMPLES
 * simple carbohydrate
 * simple sugars
 * complex carbohydrate
 * starchy foods
 * starch is a readily stored forms of glucose in plants and animals
 * fiber is non digestible carbohydrates that are found in plants. the benefits of having it in a diet is that it cleans out your large intestine
 * low carb dieting sometimes work because the body doesnt take in foods high in starch and it is risky because the reduces the risk of heart disease
 * the functions of fats and oils is for long term energy storage, insulation and organ protection. for example the fat in your body protects the vital organs.
 * fats and oils are composed of one glycerol molecule and three fatty acid molecules
 * saturated fat has no double bonds between the carbon atoms and unsaturated fat have double bonds between the carbon atoms.