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