Test Your Knowledge On Lipids!
Short interactive quiz to follow a presentation on Lipids
- 1.The label on a container of margarine lists 'hydrogenated vegetable oil' as the major ingredient. What is the result of adding hydrogens to vegetable oil?
- A.
The hydrogenated vegetable oil has a lower melting point.
- B.
The hydrogenated vegetable oil stays solid at room temperature.
- C.
The hydrogenated vegetable oil has more "kinks" in the fatty acid chains.
- D.
The hydrogenated vegetable oil has fewer trans fatty acids.
- E.
The hydrogenated vegetable oil is less likely to clog arteries.
- 2.Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits. Which of the following is an exception to this statement?
- A.
A steroid
- B.
Cellulose
- C.
DNA
- D.
An enzyme
- E.
A contractile protein
- 3.A phospholipid is a type of lipid which makes up cell membranes. Which of the following does not characterize a phospholipid?
- A.
A phosphate functional group
- B.
A hydrophilic head and hydrophobic tails
- C.
The ability to form a bilayer
- D.
A hydrophobic head and hydrophilic tails
- E.
An ester bond between glycerol and fatty acids
- 4.Steroids are specialized lipids composed of four fused carbon rings. Based on this knowledge, what would you expect to be the chemical formula of a steroid?
- A.
CO2
- B.
C96H150O9
- C.
C4H12
- D.
C27H46O
- E.
NH3
- 5.The primary function of fats is...
- A.
To provide structure within specialized cells
- B.
To secrete fatty acids into the body at a moderate rate
- C.
To store energy
- D.
To act as risk factors for diseases, such as cardiovascular diease
- E.
Act as a hydrophobic element in the body to ward off excess water
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