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