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What is an antigen?

A. Toxic substance

B. A kind of protein

C. Blood platelets

D. Blood corpuscles

Correct Answer :

B. A kind of protein


Related Questions

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Who was the first scientist/doctor who attempted vaccination?

A. Joseph Lister

B. Robert Koch

C. Elie Metchnikoff

D. Edward Jenner

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The theory of use and disuse was used to explain evolution by

A. Lamarck

B. Darwin

C. De Vries

D. Wallace

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Calcium and phosphorus assimilation will depend on sufficient intake of

A. vitamin B complex

B. vitamin D

C. vitamin A

D. vitamin C

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Measles is caused by

A. bacteria

B. fungus

C. virus

D. protozoan

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The enzyme that is necessary to bring about clotting of blood is

A. peptidase

B. amylase

C. lipase

D. thrombokinase

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Dwarf plants can be made to attain their normal stature by applying

A. IAA

B. Ethylene

C. Gibberelins

D. Cytokinins

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Hydrotropism means the growth of roots

A. away from water

B. towards water

C. into water

D. out of water

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Pneumonia is ,a bacterial disease caused by the type of bacteria called

A. Bacilli

B. Cocci

C. Sprilli

D. Vibrio

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Dinosaur is a/an

A. Fish

B. Amphibian

C. Reptile

D. Bird

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Desert plants are called

A. Xerophytes

B. Bryophytes

C. Pteridophytes

D. Halophytes

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Which of these is most consistently observed in Vitamin B12 deficiency?

A. Pigmentation of skin

B. Red, sore tongue with capillary atrophy

C. Megaloblastic anemia

D. Absence of tendon reflexes

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Which of the following diseases is water borne?

A. Cholera

B. Malaria

C. Filiariasis

D. None of the above

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When the earth was formed it had an atmosphere with

A. Hydrogen, Oxygen and Nitrogen

B. Water Vapour, Hydrogen and Oxygen

C. Oxygen, Carbondioxide and Nitrogen

D. Water Vapour, Ammonia and Methane

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The hormone that contains iodine is

A. Prolactin

B. Vasopressin

C. Thyroxine

D. Adrenalin

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The suggestion that the chromosomes are the carriers of hereditary material was first made by

A. Johanson

B. Flemming

C. Sutton and Boveri

D. Morgan

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The science of improving the hereditary qualities of future generations of mankind is referred to as

A. genetics

B. eugenics

C. epigenesist

D. epistasis

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Kwashiorkor' is caused by deficiency of

A. carbohydrates

B. proteins

C. fats

D. vitamins

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Aphids are

A. insect pests

B. fungal pests

C. bacterial pests

D. viral pests

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The method of inducing artificial immunity was discovered by

A. Jenner

B. Tolstoy

C. Pasteur

D. Morgan

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The theory that cells arise from the pre-existing cells was proposed by

A. Nageli

B. Virchow

C. Schleiden

D. Muller

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What is the other name for the brain?

A. myelon

B. encephalon

C. cephalon

D. All the above

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Mendel chose for his experiments the plant

A. Bean

B. Pea

C. Cucumber

D. Rose

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The age of a tree can be determined by

A. counting the number of annual rings

B. thickness of the bark

C. the bulk of the tree

D. the number of leaves

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The mouth of a river opening into the sea is termed as

A. shore line

B. littoral zone

C. continental shelf

D. estuary

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Sex linked genes are carried by

A. X-chromosomes

B. Y-chromosomes

C. different part of X- and Y-chromosomes

D. autosomes

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Foal' is the young on of the

A. Cat

B. Lion

C. Tiger

D. Horse

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Which one of the following genetical disease is sex-linked?

A. Royal haemophilia

B. Tay-Sachs disease

C. Cystic fibrosis

D. Hypertension

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Which one of the ecosystems Is the largest in the world?

A. forests

B. rivers

C. deserts

D. oceans

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Legumes are highly nutritious because they are rich in

A. starch

B. oils

C. fat

D. protein

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Which of the following is a good and rich source of vitamin 'C'?

A. Milk

B. Radish

C. Mango

D. Lemon Juice