Which of the following is not an attribute of an enzyme?
It is a protein whose synthesis is controlled and directed by a specific gene
It catalyses a specific chemical reaction
It becomes denatured by high temperature
It is consumed in a chemical reaction
Correct Answer :
D. It is consumed in a chemical reaction
Related Questions
Vitamin B is related with
FMN/FAD
NAD
NADH
ATP
The enzymes found in the stomach of rabbit are
renin, pepsin, lipase
lipase, amylase, renin
erepsin, lipase, renin
pepsin, amylase, lipase
The structure which prevents the entry of food into respiratory tract is
larynx
pharynx
glottis
epiglottis
Chronic alcoholics are always short of
A
B
C
D
A vitamin which is excreted in urine usually is
C
K
Bi
E
Water-soluble vitamins are
A, B and C
C and D
B and C
None of these
Trypsin is secreted by
stomach
pancreas
liver
duodenum
Xerophthalmia in children and Nyctalopia (night blindness) in adults is caused by deficiency of vitamin
A
D
E
K
Excessive reabsorption of vitamin A by bone leads to
keratomalacia
hypercalcaemia
hyperkeratosis
beri beri
Vitamin C is
ascorbic acid
aspartic acid
Jipoicacid
nicotinic acid
Synthesis of vitamin D with the help of sunlight takes place by
skin
liver
adipose tissue
gallbladder
The protein deficiency disease is known as
eczeme
mycoses
scurvy
kwashiorkor
Substance required to overcome xerophthalmia derived from carrots is
vitamin A
vitamin D
proteins
xanthophyll
Chitin is a
protein
carbohydrate
mineral
fat
Wound healing is enhanced by vitamin
A
C
D
E
Bile helps in
producing enzymes
esterification
both (a) and (b)
emulsification of fats
Scurvy is caused due to dificiency of
vitamin C
vitamin D
vitamin K
vitamin A
Beri beri caused by deficiency of vitamin B, was discovered by
Stanley
Foxon
Funk
Fijkman
Deficiency of thiamine causes
scurvy
pellagra
osteomalacia
beri beri
In liver the stationary cells lining the blood capillaries act as phagocytes to ingest foreign germs and worn out RBC. These cells are called
goblet cells
oxyntic cells
lymphocytes
kupffer cells
The enzymes have porteinous and prosthetic groups connected by loose bonds. Under activity the loose bonds are separated. It is known as
diakinesis
synapsis
dialysis
histolysis
Hie enzyme invertase converts
starch into glucose
glucose into sucrose
cellulose into starch
sucrose into glucose and fructose
Vitamin A was discovered by
Mc. Collum and Devis
Richert and Dam
Funk
Ejikmann Christian
Specific function of liver is
excretion
histolysis
digestion
glycogenolysis
The deficiency of vitamin 'C' causes
anaemia
scurvy
rickets
xerophthalmia
Certain B vitamins act as
enzymes
coenzymes
hormones
digestive substance
Vitamins are
inorganic substances that cannot be synthesised by animal
inorganic substances that can be synthesised by animal
organic substances that cannot be synthesised by animal
organic substances that can be synthesised by animal
Deficiency of vitamin A causes
scurvy
rickets
xerophthalmia
xerophthalmia and nyctalopia
Amylase digests starch
in duodenum in alkaline medium
in duodenum in acidic medium
in stomach in alkaline medium
in stomach in acidic medium
The enzymes responsible for the digestion of starch in food of man are present in
saliva and gastric juice
salvia and pancreatic juice
gastric and pancreatic juice
gastric and duodenal juice