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Essential Biochemistry - Chemistry Of Lipids (Section 1)

1
What is saponification?
Answer
(B)
The hydrolysis of triglycerides by alkali
2
Which of the following is a type of complex lipid?
Answer
(C)
Phospholipid
3
Which of the following compounds is a precursor for prostaglandins?
Answer
(A)
Arachidonic acid
4
Which of the following statements about cholesterol is true?
Answer
(A)
It is saturated
5
Which of the following is an example of an essential fatty acid?
Answer
(C)
Linoleic acid
6
What is the main purpose of the acid number test?
Answer
(C)
To measure the amount of free fatty acids
7
Which of the following phospholipids has an antigenic activity?
Answer
(B)
Cardiolipin
8
Which of the following is an example of a sterol?
Answer
(B)
Cholesterol
9
What is the name of the process that converts liquid oils into solid fats?
Answer
(B)
Hydrogenation
10
All of the following statements about lipids are true, except:
Answer
(D)
They are polyhydroxy aldehydes
11
Which of the following is a characteristic of saturated fatty acids?
Answer
(C)
Are generally found in animal fats
12
What is the primary structural component of cell membranes?
Answer
(B)
Phospholipids
13
What is the most common type of lipid in the human diet?
Answer
(C)
Triglycerides
14
What is the role of antioxidants in the context of lipid chemistry?
Answer
(B)
To slow down the rate of oxidation.
15
Which of the following statements best describes the structure of a micelle?
Answer
(C)
Spherical structure with hydrophobic tails inward and hydrophilic heads outward.
16
What are the building blocks of triglycerides?
Answer
(A)
Fatty acids and glycerol
17
Which of the following is an example of a monounsaturated fatty acid?
Answer
(B)
Oleic acid
18
Which of the following is a characteristic of unsaturated fatty acids?
Answer
(C)
Have one or more double bonds
19
Which factors influence the melting point of a fatty acid?
Answer
A
B
20
The precursor for vitamin D is:
Answer
(A)
Cholesterol
21
Which ring of the cholesterol molecule contains a double bond?
Answer
(C)
C-ring
22
Which of the following fatty acids is generally found in vegetable oils?
Answer
(C)
Linoleic acid
23
Which of the following is the major storage and transport form of fatty acids?
Answer
(B)
Triacylglycerol
24
The lipoprotein particles that have the highest concentration of triacylglycerol are:
Answer
(D)
Chylomicrons
25
All of the following are sphingolipids, except:
Answer
(C)
Phosphatidylinositol
26
Which of the following are functions of phospholipids?
Answer
A
C
27
Glycerol is in the backbone of:
Answer
(A)
Glycerophospholipid
28
Which of the following glycolipids is known to be the receptor in human intestine for cholera toxin?
Answer
(A)
GM1
29
Which of the following lipids is deficient in infants with respiratory distress syndrome?
Answer
(D)
Dipalmitoyl phosphatidylcholine
30
Which of the following is NOT a function of prostaglandins?
Answer
(D)
Calcium absorption
31
Which type of molecules are predominantly found in a lipid bilayer?
Answer
(C)
Phospholipids
32
Which of the following is a type of phospholipid?
Answer
(B)
Sphingomyelin
33
Which bond is broken during saponification?
Answer
(A)
Ester bond
34
What is the primary function of cholesterol in the body?
Answer
(B)
Building structural components of cell membranes
35
Which type of fat is associated with increased risk of heart disease?
Answer
(A)
Saturated fat
36
All of the following statements are true for phospholipids, except:
Answer
(A)
They are major storage of metabolic energy
37
Methylated form of phosphatidyl ethanolamine is known as:
Answer
(B)
Phosphatidylcholine
38
What is a characteristic of cis fatty acids?
Answer
(C)
The hydrogens are on the same side of the double bond.
39
Which of the following carbohydrates distinguishes a ganglioside from a globoside?
Answer
(B)
N-acetylneuraminic acid
40
Which of the following is NOT a function of lipids?
Answer
(C)
Transmission of genetic information
41
All of the following statements about prostaglandins are true, except:
Answer
(D)
They are synthesized only in prostate gland
42
Which of the following are classes of lipids?
Answer
A
B
C
43
Which of the following is a role of phospholipids?
Answer
(B)
Building blocks of cell membranes
44
What is saponification?
Answer
(A)
The process of converting fat into soap
45
Which of the following is an example of an essential fatty acid?
Answer
(B)
Linoleic acid
46
Which of the following is a component of a sphingolipid?
Answer
(B)
Sphingosine
47
Which of the following are types of essential fatty acids?
Answer
A
B
48
Which ring of the cholesterol molecule contains a double bond?
Answer
(C)
C ring
49
What is the main function of liposomes?
Answer
(C)
Drug delivery
50
Which of the following is the major component of micelles?
Answer
(A)
Phospholipids