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Essential Biochemistry - Chemistry Of Lipids (Section 2)

1
Which of the following compounds is primarily involved in platelet aggregation?
Answer
(B)
Thromboxane A2
2
What is the role of lipoproteins?
Answer
(B)
To transport lipids in the blood
3
What are triacylglycerols?
Answer
(C)
The primary storage form of fats in the body
4
What is the primary component of cell membranes?
Answer
(C)
Phospholipids
5
Which of the following are characteristics of the functions of lipids?
Answer
A
B
C
6
Which type of fatty acids are solids at room temperature?
Answer
(A)
Saturated fatty acids
7
Which statement about cholesterol is false?
Answer
(D)
Cholesterol is an energy storage molecule
8
Which of the following is the major storage and transport form of fatty acids?
Answer
(B)
Triacylglycerol
9
All of the following statements are true for phospholipids, except:
Answer
(A)
They are major storage of metabolic energy
10
Which of the following is NOT a function of lipids?
Answer
(D)
Synthesis of proteins
11
What is the significance of the iodine number?
Answer
(A)
Indicates the degree of unsaturation in a fat
12
The polar lipid like phospholipid is:
Answer
(A)
Amphipathic
13
Leukotrienes are characterized by:
Answer
(B)
a conjugated triene system
14
Which of the following is/are the function(s) of Prostaglandins?
Answer
A
B
C
D
15
Which one of these lipoprotein particles is the largest?
Answer
(A)
Chylomicrons
16
All of the following statements about lipids are true, except:
Answer
(D)
They are polyhydroxy aldehydes
17
What is the role of prostaglandins?
Answer
(B)
Cell signaling and inflammation
18
Which of the following has no natural detergents?
Answer
(C)
Detergents
19
What is the general function of a micelle?
Answer
(C)
To transport lipid-soluble materials.
20
The precursor of prostaglandins is:
Answer
(A)
Arachidonic acid
21
What is the function of cholesterol?
Answer
(B)
Component of cell membranes and precursor for steroid hormones
22
Which of the following statements about cholesterol is true?
Answer
(B)
It contains 27-carbon atom
23
Which of the following phospholipids has an antigenic activity?
Answer
(B)
Cardiolipin
24
What is the primary function of cholesterol in the human body?
Answer
(B)
To act as a structural component of cell membranes and precursor for steroid hormones
25
Cholesterol is:
Answer
(C)
Amphipathic, with a polar head
26
Which of the following is a feature of monounsaturated fatty acids?
Answer
(A)
Contain one double bond
27
Which of the following are functions of cholesterol?
Answer
A
B
28
Which of the following lipids is deficient in infants with respiratory distress syndrome?
Answer
(D)
Dipalmitoyl phosphatidylcholine
29
What do we call the process of adding hydrogen to an unsaturated fat?
Answer
(B)
Hydrogenation
30
Which fatty acid contains three double bonds?
Answer
(C)
Arachidonic acid
31
What is the major difference between glycolipids and phospholipids?
Answer
(A)
Glycolipids contain a carbohydrate group, while phospholipids contain a phosphate group.
32
What is the difference between cis and trans fatty acids?
Answer
(A)
Cis fatty acids have a bent shape, while trans fatty acids have a straight shape
33
Which is/are components of lipoproteins?
Answer
A
B
C
34
Which of the following carbohydrates distinguishes a ganglioside from a globoside?
Answer
(B)
N-acetylneuraminic acid
35
Which of the following is the basic structure of Prostaglandins?
Answer
(A)
Cyclopentane ring
36
All the following are sphingolipids, except
Answer
(C)
Phosphatidylinositol
37
What is the function of sphingolipids?
Answer
(B)
Structural components of cell membranes, especially in nerve tissues
38
What is the significance of the acid number?
Answer
(C)
It measures the amount of free fatty acids in a fat.
39
What type of bond is present in a triacylglycerol?
Answer
(A)
Ester bond
40
Which of the following is/are functions of glycolipids?
Answer
A
B
C
D
41
What is the general function of Leukotrienes?
Answer
(D)
All of the above
42
Glycerol is in the backbone of:
Answer
(A)
Glycerophospholipid
43
Which of the following are components of a phospholipid?
Answer
A
B
C
44
Modified form of phosphatidyl ethanolamine is known as:
Answer
(C)
Phosphatidylserine
45
Which of the following is NOT a type of derived lipid?
Answer
(A)
Fatty acids
46
Which of the following is a characteristic of essential fatty acid deficiency?
Answer
(B)
Scary skin and poor wound healing
47
Which of the following glycolipids is known to be the receptor in human intestine for cholera toxin?
Answer
(A)
GM1
48
Which of the following is a characteristic of phospholipids?
Answer
(B)
They are a major component of cell membranes
49
What is the role of an unsaturated fatty acid in the human body?
Answer
(C)
To support the cell membrane's fluidity
50
Which of the following is the precursor for vitamin D?
Answer
(A)
Cholesterol