LIPIDS

Question 1

These are substances grouped together on the basis of their insolubility in water and solubility in most organic solvents:

A. Nucleic acids
B. Carbohydrates
C. Lipids
D. Proteins

Answer 1

C. Lipids

Question 2

A condition known as atherosclerosis results as an accumulation in the blood vessels of:

A. Calcium
B. Cholesterol
C. Pathogens
D. Ketones

Answer 2

B. Cholesterol

Question 3

As the number of grams of iodine chemically react with 100g of fats:

A. Saponification Number
B. Iodine Number
C. Ester Value
D. Acid Value
E. Both A and B

Answer 3

B. Iodine Number

Question 4

The clinical test for the determination of cholesterol:

A. Liebermann – Burchard
B. Salkowski
C. A and B
D. None of these

Answer 4

C. A and B

Question 5

It is defined as ester of fatty acids with glycerol:

A. Waxes
B. Fats
C. Simple lipids
D. Glycolipids

Answer 5

B. Fats

Question 6

The metallic salt of a high fatty acid:

A. Soap
B. Trypsin
C. Chymotrypsin
D. Carboxypeptidase

Answer 6

A. Soap

Question 7

This eicosanoid is a pro-inflammatory agent and play a part in asthma:

A. Prostaglandin
B. Prostacyclin
C. Thromboxane
D. Leukotrienes

Answer 7

D. Leukotrienes

Question 8

Rancidity of fats maybe due to:

A. Oxidation
B. Hydrogenation
C. Saponification
D. Condensation

Answer 8

A. Oxidation

Question 9

Cholesterol is a major constituent of:

A. Plasma membrane
B. Plasma lipoprotein
C. Plant tissues
D. A and B
E. All of these

Answer 9

D. A and B

Question 10

Which of the following is considered to be the good cholesterol?

A. VLDL
B. LDL
C. IDL
D. HDL
E. TAGs

Answer 10

D. HDL

Question 11

The chemical precursor to all prostaglandins is:

A. Arachidonic acid
B. Cholesterol
C. Leukotriene
D. Prostacycline
E. Thromboxane

Answer 11

A. Arachidonic acid

Question 12

Although the prostaglandins are hormone – like substance, they more likely resembles ____ chemically:

A. Proteins
B. Carbohydrates
C. Enzymes
D. Lipids

Answer 12

D. Lipids

Question 13

Which of the following is least describes lipids?

A. Nonpolar
B. Carbon-containing
C. Amphipathic
D. Hydrophilic

Answer 13

D. Hydrophilic

Question 14

Which of the following substances represents an unsaturated fatty acid?

A. Cholesterol
B. Palmitate
C. Stearate
D. Choline
E. Oleate

Answer 14

E. Oleate

Question 15

Triglyceride absorbed into the lymphatic system is transported to the liver as which of the following?

A. Very low density lipoprotein
B. Low density lipoprotein
C. Chylomicrons
D. Liposomes
E. Micelles

Answer 15

C. Chylomicrons

Question 16

Which of the following compounds is an intermediate in the biosynthesis of cholesterol?

A. Squalene
B. Hexosamine
C. Cholic acid
D. Pregnanediol
E. Deoxycholic acid

Answer 16

A. Squalene

Question 17

The major lipids that make up the cell membrane are:

A. Triglycerides
B. Sphingomyelins
C. Phospholipids
D. Fatty acids
E. Steroids

Answer 17

C. Phospholipids

Question 18

Each of the following lipid classes is incorporated into membranes, except:

A. Cholesterol
B. Ganglioside
C. Triglyceride
D. Sphingomyelin
E. Phosphatidylcholine

Answer 18

C. Triglyceride