2. Cell Chemistry & Cell Components
Lipids
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Practice this topic
- Multiple Choice
Which type of fatty acids only contain Carbon-Carbon single bonds?
a) Unsaturated.
b) Saturated.
c) Trans fats.
d) Steroids.
- Multiple Choice
A triglyceride is a form of _______ composed of ___________.
a) Lipid ; fatty acids & Glucose.
b) Lipid ; Fatty acids & Glycerol.
c) Carbohydrate ; Fatty acids only.
d) Lipid ; Ribose.
- Multiple Choice
How do phospholipids interact with water molecules?
a) The polar heads avoid water; the nonpolar tails attract water (because water is polar and opposites attract).
b) Phospholipids do not interact with water because water is polar and lipids are nonpolar.
c) The polar heads interact with water; the nonpolar tails do not.
d) Phospholipids dissolve in water.
- Multiple Choice
The molecule shown the figure is a ________.
a) Fatty acid.
b) Wax.
c) Steroid.
d) Triacylglycerol.
e) Phospholipid.
- Open QuestionHow do the phospholipids in archaea differ from those in other cells?a. They have tails made of unsaturated fatty acids instead of saturated fatty acids.b. They do not contain hydrocarbon chains.c. They have isoprenoid tails instead of fatty acid tails.d. They have two hydrocarbon chains instead of three hydrocarbon chains.
- Open QuestionMacronutrients .a. include carbohydrates and vitamins;b. should make up a small percentage of a healthful diet;c. are essential in minute amounts to help enzymes function;d. include carbohydrates, fats, and proteins;e. are synthesized by cells and not necessary to obtain from the diet
- Open QuestionWhich of the following is true of unsaturated fats?a. They are more common in animals than in plants.b. They have double bonds in their fatty acid chains.c. They generally solidify at room temperature.d. They contain more hydrogen than do saturated fats having the same number of carbon atoms.
- Open QuestionWhat makes a fatty acid an acid?a. It does not dissolve in water.b. It is capable of bonding with other molecules to form a fat.c. It has a carboxyl group that can donate an H+ to a solution.d. It contains only two oxygen atoms.