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4

Lactose and Rennin, the enzymes required to digest milk, disappear in the human body by the age of _______ years.

A. 2

B. 3

C. 5

D. 8

Correct Answer :

A. 2


Related Questions

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The germ theory of diseases was put forward by

A. Louis Pasteur

B. Luister

C. Leuwenhoek

D. Flemming

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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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In case of a heart attack a hormone is injected as an emergency measure. Which one is it?

A. Thyroxine

B. Adrenaline

C. Heparin

D. Insulin

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4

AIDS is caused by the organisms which are

A. bacteria

B. fungi

C. viruses (HTLV III)

D. Protozoa

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Those small organisms which float on the surface of water are called

A. Necton

B. pH indicators

C. Plankton

D. Benthos

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The layer of stagnant water in which light penetrates is called

A. Aphotic

B. Euphotic

C. Epilimnion

D. Disphotic

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The theory that believes that the first living organism came from another planet is known as

A. Catastrophism

B. Special creation

C. Organic evolution

D. Cosmozoic theory

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4

The grouping of blood is based on substances called

A. antibodies

B. antigens

C. antitoxin

D. enzymes

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In case of a heart attack a hormone is injected as an emergency measure. Which one is it?

A. Thyroxine

B. Vasopressin

C. Heparin

D. Insulin

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4

Green plants synthesise carbohydrates by the

A. holozoic method

B. holophytic method

C. saprophytic method

D. parasitic method

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4

What are the symptoms of Xeroph-thalmia?

A. eye weakness

B. dry skin and night blindness

C. nervous break down

D. All the above

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4

Which organelle in the cell, other than nucleus, contains DNA?

A. Centriole

B. Golgi apparatus

C. Lysosome

D. Mitochondrion

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An inherited characteristic which does not appear in one generation but can appear in the next is called

A. dominant

B. recessive

C. homozygous

D. heterozygous

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The tear glands help us in

A. sobbing

B. protecting the eye

C. preventing dust

D. providing a clean moist surface

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Somato Tropic Hormone is concerned with

A. Body growth

B. Metamorphosis

C. Digestion

D. Reproduction

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Malarial parasite is brought to human host by

A. male anopheles mosquito

B. female anopheles mosquito

C. male culex

D. female culex

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4

Vivipary is defined as germination

A. during storage

B. within the fruit

C. with cotyledons coming out of soil

D. with cotyledons remaining inside the soil

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The spider spins its web from a liquid secreting from its

A. posterior silk gland

B. posterior abdomen glands

C. mouth

D. salivary glands

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Maintenance of pregency is under the control of

A. Follicular stimulating hormone

B. Growth hormone

C. Estrogen

D. Progesterone

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Food substances are substances by

A. hormones

B. enzymes

C. vitamins

D. zymogens

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Kwashiorkar is a deficiency disease

A. due to poor intake of proteins

B. due to poor intake of carbohydrates

C. due to (a) and (b)

D. due to poor intake of lipids

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4

Fishes send out their nitrogenous waste as

A. ammonia

B. urea

C. uric acid

D. sweat

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The stones formed in human kidney consist mostly of

A. calcium oxalate

B. sodium acetate

C. magnesium

D. calcium

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The hormones are carried to target organs through the

A. blood

B. lymph

C. water

D. corpuscles

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The disease Goitre is caused in persons who do not have in their diet sufficient

A. calcium

B. sodium

C. iodine

D. iron

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Typhoid is a disease caused by

A. virus

B. bactena

C. fungus

D. animal

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4

Valve a are present inside

A. Arteries

B. Capillaries

C. Veins

D. Lymph vessels

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4

Biological control is to check growth of

A. plants

B. animals

C. weeds

D. one pest by another

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Tuberculosis is caused by

A. tobacco

B. tubers

C. bacteria

D. virus

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Which of the following organelles is known as the 'power House' of the cell?

A. Golgi Bodies

B. Ribosomes

C. Mitochondria

D. None of these