WorksheetsBiochem Quiz
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
An example of a saturated fatty acid is
a)
Palmitic acid
b)
Erucic acid
c)
Oleic acid
d)
Linoleic acid
2.
If the fatty acid is esterified with an alcohol of high molecular weight instead of glycerol, the resulting compound is
a)
Lipositol
b)
Plasmalogen
c)
Wax
d)
Cephalin
3.
A fatty acid which is not synthesized in the body and has to be supplied in
a)
Palmitic acid
b)
Lauric acid
c)
Linolenic acid
d)
Palmitoleic acid
4.
Essential fatty acid:
a)
Linoleic acid
b)
Linolenic acid
c)
Arachidonic acid
d)
All these
5.
The number of double bonds in arachidonic acid is
a)
1
b)
2
c)
4
d)
6
6.
In humans, a dietary essential fatty acid is
a)
Palmitic acid
b)
Stearic acid
c)
Oleic acid
d)
Linoleic acid
7.
A lipid containing alcoholic amine residue is
a)
Phosphatidic acid
b)
Ganglioside
c)
Glucocerebroside
d)
Sphingomyelin
8.
The importance of phospholipids as constituent of cell membrane is because they possess
a)
Fatty acids
b)
Both polar and nonpolar groups
c)
Glycerol
d)
Phosphoric acid
9.
Higher alcohol present in waxes is
a)
Benzyl
b)
Methyl
c)
Ethyl
d)
Cetyl
10.
Gangliosides are complex glycosphingolipids found in
a)
Liver
b)
Brain
c)
Kidney
d)
Muscle
11.
Molecular formula of cholesterol is
a)
C27H45OH
b)
C29H47OH
c)
C29H47OH
d)
C23H41OH
12.
The cholesterol molecule is
a)
Benzene derivative
b)
Quinoline derivative
c)
Steroid
d)
Straight chain acid
13.
Gaucher’s disease is due to deficiency of the enzyme:
a)
Sphingomyelinase
b)
Glucocerebrosidase
c)
Galactocerbrosidase
d)
β-Galactosidase 4
14.
Characteristic finding in Gaucher ’s disease is
a)
Night blindness
b)
Renal failure
c)
Hepatosplenomegaly
d)
Deafness
15.
An important finding in Neimann-Pick disease is
a)
Leukopenia
b)
Cardiac enlargement
c)
Corneal opacity
d)
Hepatosplenomegaly
16.
Atherosclerosis and coronary heart diseases are associated with the diet:
a)
High in total fat and saturated fat
b)
Low in protein
c)
High in protein
d)
High in carbohydrate
17.
The lipoprotein richest in cholesterol is
a)
Chylomicrons
b)
VLDL
c)
LDL
d)
HDL
18.
The major storage form of lipids is
a)
Esterified cholesterol
b)
Glycerophospholipids
c)
Triglycerides
d)
Sphingolipids
19.
The nitrogenous base in lecithin is
a)
Ethanolamine
b)
Choline
c)
Serine
d)
Betaine
20.
Niemann-Pick disease results from deficiency of
a)
Ceramidase
b)
Sphingomyelinase
c)
Arylsulphatase A
d)
Hexosaminidase A
21.
The concentration of sphingomyelins are increased in
a)
Gaucher’s disease
b)
Fabry’s disease
c)
Fabrile disease
d)
Niemann-Pick disease
22.
Sphingomyelins contain a complex amino alcohol named as
a)
Serine
b)
Lysolecithin
c)
Sphingosine
d)
Glycol
23.
Very low density lipoproteins are also known as
a)
α-lipoproteins
b)
None of these
c)
β-lipoproteins
d)
Pre β--lipoproteins
24.
The protein moiety of lipoprotein is known as
a)
Apoprotein
b)
Pre-protein
c)
Post-protein
d)
Pseudoprotein
25.
Cerebrosides are composed of
a)
Sphingosine, fatty acids, glycerol and phosphoric acid
b)
Sphingosine, fatty acids, galactose
c)
Glycerol, fatty acids, galactose
d)
Glycerol, fatty acids, galactose, sphingol
26.
Which amino acid is a lipotropic factor?
a)
Lysine
b)
Leucine
c)
Tryptophan
d)
Methionine
27.
The class of lipoproteins having a beneficial effect in atherosclerosis is
a)
Low density of lipoproteins
b)
very low density lipoproteins
c)
High density lipoproteins
d)
Chylomicrons
28.
Cholesterol circulates in blood stream chiefly as
a)
Free cholesterol
b)
Ester cholesterol
c)
Low density lipoproteins
d)
Low density lipoproteins and high density lipoproteins
29.
A diet containing this fat is helpful in lowering the blood cholesterol level.
a)
Unsaturated
b)
Saturated
c)
Vitamin enriched
d)
Refined
30.
Fatty acids can not be converted into carbohydrates in the body, as the following reaction is not possible:
a)
Conversion of glucose-6-phosphate into glucose
b)
Fructose 1, 6 diphosphate to fructose-6- phosphate
c)
Transformation of acetyl CoA to pyruvate
d)
Formation of acetyl CoA from fatty acids
31.
Which of the following statements about glucose metabolism is correct
a)
Glucagon increases the rate of glycolysis
b)
Glycolysis requires NADP+
c)
In glycolysis, glucose is cleaved into two three-carbon products
d)
The end-product of glycolysis in red blood cells is pyruvate
32.
Which of the following will provide the main fuel for muscle contraction during short-term intense activity
a)
Muscle triacylglycerol
b)
Plasma free fatty acids
c)
Plasma triacylglycerol in VLDL
d)
Muscle glycogen
33.
An enzyme required for the synthesis of ketone bodies as well as cholesterol is
a)
Acetyl CoA carboxylase
b)
HMG CoA synthetase
c)
HMG CoA reductase
d)
HMG CoA lyase
34.
Ketone bodies are synthesized in
a)
Adipose tissue
b)
LIVER MITOCHONDRIA
c)
Muscles
d)
Brain
35.
DIET DEVOID OF CARBOHYDRATE CAUSES –
a)
DIABETES MELLITUS
b)
KETOSIS
c)
OBESITY
d)
NO EFFECT
36.
IN STARVATION KETOSIS OCCURS DUE TO-
a)
DECREASED ACETYL CO A
b)
INCREASED BETA OXIDATION
c)
DECREASED LIPOLYSIS
d)
DECREASED FATTY ACID
37.
ALL ARE TRUE ABOUT KETONE BODIES EXCEPT –
a)
ACETOACETATE IS PRIMARY KETONE BODY
b)
SYNTHESIZED IN MITOCHONDRIA
c)
SYNTHESIZED IN LIVER
d)
HMG CO A REDUCTASE IS THE RATE LIMITING ENZYME
38.
ORGAN WHICH CAN UTILIZE GLUCOSE, FATTY ACID & KETONE BODIES IS-
a)
LIVER
b)
BRAIN
c)
SKELETAL MUSCLE
d)
RBC
39.
ROTHRAS TEST IS +VE IN –
a)
ACETOAETATE
b)
BETA- HYDROXYBUTYRATE
c)
BOTH
d)
NONE
40.
The following require cholesterol EXCEPT
a)
Bile acid synthesis
b)
Steroid hormone synthesis
c)
Membrane fluidity
d)
Thyroid hormone synthesis
41.
All of the following is complex lipids, except
a)
Phosphatidic acid
b)
Cerebroside
c)
Cardiolipin
d)
Cholesterol
42.
Bile acid is derived from-
a)
Cholesterol
b)
Amino acids
c)
Fatty acids
d)
Bilirubin
43.
The total blood concentration of ketone bodies in well fed individual is-
a)
1mg%
b)
5 mg%
c)
12 mg%
d)
20 mg%
44.
Fat provides what % of body’s calories
a)
0.4
b)
0.3
c)
0.5
d)
0.75
45.
Lipid from tissue to liver is carried by-
a)
LDL
b)
VLDL
c)
HDL
d)
Chylomicrons
46.
Lipid is required in average diet because it-
a)
has a increased caloric value
b)
provides essential fatty acids
c)
aids in absorption oh CHO
d)
none
47.
Acetyl Co A is produced from which fuel sources-
a)
Carbohydrate
b)
Lipids
c)
Amino acids
d)
All
48.
Ketone bodies are normally synthesized from –
a)
Acetyl Co A
b)
Glucose
c)
Glycerol
d)
Acetone
49.
Ketone bodies are by products of metabolism of –
a)
CHO
b)
Proteins
c)
Fat
d)
All
50.
KB are excreted in Diabetic ketoacidosis –
a)
Acetoacetic acid & pyruvic acid
b)
Acetoacetic acis & oxaloacetic acid
c)
Acetoacetic acid &b ketoglutaric acid
d)
Acetoacetic acid & beta hydroxybutyric acid
100 %
