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					                                               Section 3.4 – Lipids
First, go back and read over pg. 29. Answer the following questions:
    1.   Define hydrophilic and hydrophobic.
    2. What types of molecules are described as hydrophilic?
    3. What types of molecules are described as hydrophobic?
    4. Which dissolve in water…hydrophilic or hydrophobic molecules?
Section 3.4 questions:
    5. Why are lipids hydrophobic?
    6. List 4 functions of lipids.
    7. What are the 3 major groups of lipids?
    8. What 3 elements make up oils, fats, and waxes?
    9. Fats and oils are formed from 3 fatty acids and one molecule of _______________.
    10. What is the chemical name for fats and oils?
    11. Which has a higher concentration of energy…fats or sugars?
    12. For what do plants and animals use fats and oils?
    13. What is the difference between saturated and unsaturated fats?
    14. Which are usually solid at room temperature (saturated or unsaturated fats)?
    15. Where do most saturated fats come from?
    16. Where do most unsaturated fats come from?
    17. Where do you find waxes in plants? In animals?
    18. Phospholipids make up what part of a cell?
    19. Which part of a phospholipid is hydrophilic?
    20. Which part is hydrophobic?
    21. Describe the structure of a steroid.
    22. Give an example of a steroid that is important to animals.
Read “Health Watch” on pg. 45.
    23. Why is cholesterol important? List several reasons.
    24. Why is cholesterol dangerous in high levels?
    25. List some sources of cholesterol in our diet.
    26. Which type of cholesterol is the “good” kind? The “bad” kind?
    27. Are trans fats naturally or artificially derived?
    28. Why are trans fats dangerous?
    29. How many people in the U.S. have high cholesterol?
    30. How can high cholesterol be treated?
                                               Section 3.4 – Lipids
First, go back and read over pg. 29. Answer the following questions:
    1.   Define hydrophilic and hydrophobic.
    2. What types of molecules are described as hydrophilic?
    3. What types of molecules are described as hydrophobic?
    4. Which dissolve in water…hydrophilic or hydrophobic molecules?
Section 3.4 questions:
    5. Why are lipids hydrophobic?
    6. List 4 functions of lipids.
    7. What are the 3 major groups of lipids?
    8. What 3 elements make up oils, fats, and waxes?
    9. Fats and oils are formed from 3 fatty acids and one molecule of _______________.
    10. What is the chemical name for fats and oils?
    11. Which has a higher concentration of energy…fats or sugars?
    12. For what do plants and animals use fats and oils?
    13. What is the difference between saturated and unsaturated fats?
    14. Which are usually solid at room temperature (saturated or unsaturated fats)?
    15. Where do most saturated fats come from?
    16. Where do most unsaturated fats come from?
    17. Where do you find waxes in plants? In animals?
    18. Phospholipids make up what part of a cell?
    19. Which part of a phospholipid is hydrophilic?
    20. Which part is hydrophobic?
    21. Describe the structure of a steroid.
    22. Give an example of a steroid that is important to animals.
Read “Health Watch” on pg. 45.
    23. Why is cholesterol important? List several reasons.
    24. Why is cholesterol dangerous in high levels?
    25. List some sources of cholesterol in our diet.
    26. Which type of cholesterol is the “good” kind? The “bad” kind?
    27. Are trans fats naturally or artificially derived?
    28. Why are trans fats dangerous?
    29. How many people in the U.S. have high cholesterol?
    30. How can high cholesterol be treated?

				
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