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4

The cortex of human brain normally consists of

A. five billion, two hundred million cells

B. nine billion, two hundred million cells

C. six billion, two hundred million cells

D. eight billion, two hundred million cells

Correct Answer :

B. nine billion, two hundred million cells


Related Questions

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What are the symptoms of retinal deficiency?

A. Dry skin

B. Rough skin

C. Night blindness

D. Sensitiveness to light and ulcers

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4

What is an antigen?

A. Toxic substance

B. A kind of protein

C. Blood platelets

D. Blood corpuscles

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The protein synthesis takes place in

A. Ribosomes

B. Chromosomes

C. DNA

D. None of these

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4

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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4

The germ theory of diseases was put forward by

A. Louis Pasteur

B. Luister

C. Leuwenhoek

D. Flemming

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A person with a blood group ____ is considered to be an universal donor.

A. A Positive

B. AB Positive

C. AB Negative

D. O Positive

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Cretinism is due to the disorder of the glands

A. Thymus

B. Parathyroid

C. Thyroid

D. Adrenal

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4

The association between leguminous plants and bacteria is

A. parasitic

B. saprophytic

C. symbiotic

D. None of the above

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4

Sexual selection theory was propounded by

A. Wallace

B. De Vires

C. Lamarck

D. Charles Darwin

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4

The phenomenon of summer sleep by animals is called

A. hibernation

B. aestivation

C. laziness

D. lethargy

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4

The blood pressure is controlled by the hormone

A. Vasopressin

B. Oxytocin

C. Oestrogen

D. Testasterone

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4

The saliva contains an enzyme called

A. ptyalin

B. pepsin

C. trypsin

D. erepsin

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4

Which of the following is a disease of brain?

A. SARS

B. AlDS

C. Diabetes

D. Alzheimer's

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4

The oldest era is

A. Palaeozoic

B. Mesozoic

C. Cenozoic

D. Proterozoic

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4

The protoplasm of a child is exactly the same as that of its

A. mother

B. father

C. grandfather

D. identical twin

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Nephrons are found inside

A. Liver

B. Lung

C. Brain

D. Kidneys

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Higher plants take up nitrogen as

A. Nitrites only

B. Nitrates only

C. Nitrates and Ammonia

D. Urea

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Saffron is the dried ________ of the saffron plant.

A. fruit

B. aril

C. stigmas and tops of styles

D. tender leaves and sprouts

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4

Nucleus was first discovered by

A. Porter

B. Robert Brown

C. Palade

D. None of these

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4

Which among, the following is a solid lubricant?

A. carbohydrate

B. graphite

C. protein

D. starch

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4

It Is not advisable to sleep under a tree at night because of release of

A. oxygen in a lesser quantity than the required levels

B. oxygen in large amounts

C. carbon monoxide

D. carbon dioxide

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4

Blood plasma from which fibrinogen is removed is known as

A. serum

B. blood concentrate

C. lymph

D. antibody component

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4

Turner's syndrome is a disease caused by

A. bacteria

B. virus

C. fungus

D. chromosomal imbalance

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4

Which among the following is a communicable disease?

A. Beri Beri

B. Diabetes

C. Leucoderma

D. Dysentery

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4

In one minute normally the heart beats

A. 60 times

B. 80 times

C. 100 times

D. 72 times

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4

Green plants In the sea are useful for respiration of flash because they

A. release oxygen

B. release carbon dioxide

C. release oxygen and carbon dioxide simultaneously

D. take oxygen and give out carbon dioxide

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4

Accepted theory for the origin of life is

A. Cosmozoic theory

B. Biogenesis

C. Abiogenesis

D. Oparin's theory

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4

Blood is

A. acidic

B. alkaline

C. neutral

D. like a buffer

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Blood of cockroach is

A. red

B. bluish

C. greenish

D. colourless

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Fat present below the skin surface in our body acts as a barrier against

A. loss of heat from the body

B. loss of essential body fluids

C. loss of salts from the body

D. entry of harmful micro-organisms from the environment