The enzyme that is necessary to bring about clotting of blood is
peptidase
amylase
lipase
thrombokinase
Correct Answer :
D. thrombokinase
Related Questions
Chemical substances that called have effect on growth of plants are called
enzymes
catalysts
hormones
pesticides
Who coined the term gene?
Mendel
Devries
Jacob and Monod
Johanson
What is an antigen?
Toxic substance
A kind of protein
Blood platelets
Blood corpuscles
The blood clotting requires the vitamin
A
B
C
K
In phototropism, auxins
Promote growth of cells
Inhibit cell division
Inhibit growth of cells
Stimulate differential growth of cells
The external ears of man are intended for
ornaments
scattering sound waves
collect sound waves
beauty
The hormones are carried to target organs through the
blood
lymph
water
corpuscles
The principal reason why it is better to have two eyes than one is that
by having two eyes, one can distinguish colours more easily
by having two eyes, one can easily see in the dark and dim light
this gives the man a type of vision known as mosaic vision
this enhances depth perception in the humans
The dinosaurs (terrible lizards) became very successful during
Palaeozoic era
Mesozoic era
Cenozoic era
Archaeozoic era
The mode of nutrition in which particulate food is devoured is
holozoic
holophytic
saprophytic
parasitic
Niche' refers to
place of living
type of food
place of living and type of food
food and movement
Sterilization, as the means for the prevention of sepsis in surgery, was practised and advocated by
Louis Pasteur
Edward .Jenner
Joseph Lister
Martinus Willem Beijerinck
The smallest size of a cell which can be seen directly by the eye is
One micron
10 micron
100 micron
1000 micron
Which among the following animals has the largest Intestine?
Cow
Lion
Monkey
Tiger
Genes are made of
Carbohydrates
Proteins
Fats
Nucleotides
Timberline shows
a line of trees
the limit of the forest
annual rings
height of trees
Vestigeal organs are those which are
fully formed and functional
much reduced but functional
much reduced and functionless
fully formed but functionless
What are the symptoms of retinal deficiency?
Dry skin
Rough skin
Night blindness
Sensitiveness to light and ulcers
Bordetella pertussis causes
tetanus
diphtheria
whooping cough
rabies
The organ that produces antibodies in our body is
pancreas
salivary gland
liver
gonads
The genetic code DNA is carried from the nucleus to Ribosome by
t-RNA
r-RNA
S-DNA
ATP
The blood of cockroach shows the following characteristics except one. Mark it.
It serves to distribute nutrient directly to every part of the body
It contains several kinds of corpuscles without haemoglobin
It collects metabolic wastes
It carries oxygen
The human heart is
Neurogenic heart
Myogenic heart
Pulsating heart
Ampullary heart
Kwashiorkar is characterised by
dermatitis, changes in hair pigments and retarded brain growth
excretion of creatine in excess
tyrosinosis and alcaptonuria
None of these
Organisms which synthesise their own food are called
autotrophs
heterotrophs
saprotrophs
auxotrophs
The first sign of life made its appearance on the earth about
1 million years ago
500 million years ago
1 billion or 1000 million years ago
3 billion years ago
Excess of amino-acids are broken down to form urea in the
Liver
Kidney
Spleen
Rectum
Nephantis is popularly called
coconut caterpillar
brown plant hopper
tobacco caterpillar
pulse beetle
Pearl is secreted by the __________ of the pearl oyster.
foot
mantle
gills
None of these
Biologists have so far known, found and identified a large number of species in the plant and animal kingdom. In terms of numbers, the largest found and identified so far is from among the
fungi
plants
insects
bacteria