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Questions and Answers
Which type of fat raises 'good' cholesterol levels?
Which type of fat raises 'good' cholesterol levels?
- Phospholipid
- Trans unsaturated
- Saturated
- Cis unsaturated (correct)
Which of these foods contains saturated fats?
Which of these foods contains saturated fats?
- Almonds
- Cookies
- Olive oil
- Ice cream (correct)
What label correctly describes the amphipathic nature of phospholipids?
What label correctly describes the amphipathic nature of phospholipids?
- Hydrophilic 'tail' and hydrophobic 'head'
- Only hydrophobic
- Only hydrophilic
- Hydrophobic 'tail' and hydrophilic 'head' (correct)
Which type of fat raises 'bad' cholesterol levels?
Which type of fat raises 'bad' cholesterol levels?
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Which special case lipid forms bilayers in cell membranes?
Which special case lipid forms bilayers in cell membranes?
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Study Notes
Fatty Acids
- Cis Unsaturated Fatty Acids
- Found in: almonds, vegetables, fish, olive oil
- Health Effect: Raise "good" cholesterol levels
Fatty Acids
- Saturated Fatty Acids
- Found in: beef, butter, pizza, ice cream
- Health Effect: Raise "bad" cholesterol levels
Fatty Acids
- Trans Unsaturated Fatty Acids
- Found in: cookies, donuts, cakes, fries
- Health Effect: Raise "bad" cholesterol levels
Phospholipids
- Characteristics
- Amphipathic: hydrophilic "head" and hydrophobic "tail"
- Joined with a glycerol molecule
- Form bilayers, e.g., cell membrane
Cholesterol
- Characteristics
- Lipid molecule
- Amphipathic: hydrophobic and hydrophilic regions
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