Lipids: Question Preview (ID: 26225)


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All of the following are examples of lipids except
a) waxes b) glycogen c) cholesterol d) triglyceride
Lipids are used as long term energy storage molecules in animals.
a) true b) false c) d)
All lipids contain which elements?
a) carbon, nitrogen, hydrogen, oxygen b) oxygen, hydrogen, phosphorus c) phosphorus, hydrogen, carbon, oxygen d) hydrogen, carbon, oxygen
In addition to their role as energy storage compounds, lipids are used to:
a) make steroid hormones b) insulate, cushion, and support organs c) make cell membranes d) all of the choices are correct
Lipids are excellent energy storage compounds but they are used for energy only after ____ are used up.
a) proteins b) carbohydrates c) amino acids d) nucleic acids
With respect to phospholipids,
a) the head and tail are both hydrophilic b) the head and tail are both hydrophobic c) the head is hydrophobic and tail is hydrophilic d) the head is hydrophilic and tail is hydrophobic
To convert a triglyceride into a phospholipid, one important change is:
a) 1 glycerol is removed b) 2 glycerols are removed c) 1 fatty acid is removed d) 2 fatty acids are removed
Which one of the following contains a large number of unsaturated fatty acids?
a) vegetable oil b) steak c) butter d) steak and butter are both correct
A unsaturated fatty acid is one which:
a) has only single bonds in its hydrocarbon tail b) has double bonds in its hydrocarbon tail c) has a full complement of hydrogen in its hydrocarbon tail d) none of the choices is correct
A saturated fatty acid is one which:
a) has only single bonds in its hydrocarbon tail b) has double bonds in its hydrocarbon tail c) has a full complement of hydrogen in its hydrocarbon tail d) none of the choices is correct
Which of the following are building blocks for a triglyceride?
a) glycerol + 1 fatty acid b) glycerol + 2 fatty acids c) glycerol + 3 fatty acids d) glycerol + 4 fatty acids
Phospholipids have what element in the compound?
a) phosphatine b) proline c) phenylalanine d) phsphorus
All fats are lipids but not all lipids are fats.
a) true b) false c) d)
Which term is used to describe fatty acids?
a) saturated b) unsaturated c) polyunsaturated d) all choices are used
A steroid is made of
a) carbon rings b) hydroxide groups c) triple bonds d) all of the choices
Which of these is considered to be a type of lipid?
a) Fatty Acid b) Steroids c) Triglycerides d) All of the choices
Which type of lipid is a component of the plasma membrane of cells?
a) waxes b) triglycerides c) phospholipids d) polysaccharides
Carbohydrates provide more energy per gram than lipids.
a) true b) false c) d)
Triglyceride lipids are composed of three long-chain fatty acids and what else?
a) a benzene ring b) cholestrol c) glycerol d) diestersulfolipidoproteins
Which of the following statements is false?
a) unsaturated fats are liquid at room temperature b) saturated fats are solid at room temperature c) starch is a lipid d) waxes are lipids
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