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4

Tetrodotoxin is a potent poison that

A. erodes blood vessels

B. blocks conduction of nerve impulses causing respiratory paralysis

C. produces damage to the kidneys

D. produces intestinal bleeding

Correct Answer :

B. blocks conduction of nerve impulses causing respiratory paralysis


Related Questions

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4

From the end of the Triassic to the cretaceous period the earth was ruled by

A. eurypterids

B. cotylosaurs

C. dinosaurs

D. mammals

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4

Blood clotting requires vitamin

A. A

B. B

C. C

D. K

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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

Edward Jenner to find out the efficacy of vaccination used

A. his own body

B. his friend's body

C. a corpse

D. a laboratory animal

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4

Which one of the following is not an essential micronutrient for plants?

A. Boron

B. Zinc

C. Sodium

D. Copper

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4

Name the nematode which lives in lymph vessels of man.

A. Ascaris

B. Hook worm

C. Filarial worm

D. Guinea worm

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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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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

Genes are arranged in chromosomes

A. In clusters

B. In binary fashion

C. In linear fashion

D. Scattered

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What is an antigen?

A. toxic substance

B. a kind of protein

C. blood platelets

D. blood corpuscles

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4

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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4

Diseases in plants can be caused by

A. virus

B. bacteria

C. fungi

D. All the above

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4

Which one of the following seeds can benefit a patient of diabetes mellitus by normalising his blood sugar level?

A. Coriander seeds

B. Fenugreek seeds

C. Cumin seeds

D. Mustard seeds

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4

The pathogenic organisms of an infected person are destroyed by the action of

A. erythrocytes

B. leucocytes

C. blood platelets

D. all of these

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4

The part of the brain in Control of Voluntary muscles is

A. cerebellum

B. medulla oblongata

C. pons

D. cerebrum

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4

Nephantis is popularly called

A. coconut caterpillar

B. brown plant hopper

C. tobacco caterpillar

D. pulse beetle

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4

Scurvy is a disease caused by the deficiency of vitamin.

A. A

B. B

C. C

D. D

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4

Mutations could be created by X-rays. This was found by

A. Muller

B. Morgan

C. Meyer

D. Flemming

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4

One of the following is often called the master gland. Which one is it?

A. Thymus

B. Islets of Langerhans

C. Pituitary

D. Thyroid

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4

What is the colour of the outer portion of the spinal cord?

A. gray

B. brown

C. white

D. yellow

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4

Haemophllia is a genetic disorder which leads to

A. decrease in haemoglobin level

B. rheumatic heart disease

C. increase in haemoglobin level

D. non-clothing of blood

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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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4

Which among the following diseases is not caused by viral infection?

A. pneumonia

B. small pox

C. mumps

D. active transport

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4

Vitamin D deficiency leads to

A. sterility

B. pellagra

C. rickets

D. capillary fragility

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4

Clotting of blood is

A. a chain reaction

B. reversible reaction

C. reflex action

D. no reaction

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4

Which one is a water-soluble vitamin?

A. A

B. C

C. D

D. E

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4

Who is called the father of modem antiseptic surgery?

A. Edward Jenner

B. Joseph Lister

C. Louis Pasteur

D. William Harvey

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4

Late Blight' is a disease that affects the _______ crop.

A. coconut

B. cashew

C. potato

D. pepper

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4

Higher plants take up nitrogen as

A. Nitrites only

B. Nitrates only

C. Nitrates and Ammonia

D. Urea

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4

The spider spins its web from a liquid secreting from its

A. posterior silk gland

B. posterior abdomen glands

C. mouth

D. salivary glands