Question # 1

The gens found in a breeding population constitute.

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Genotype

Genome

Gene frequency

Gene pool

DNA changes are called mutations and the organisms that have undergone such changes are called

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Wild types

Changer

Mutants

Transmutants

Jean Baptiste Lamarck published his theory of evolution in

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1757

1809

1859

1945

Muscle present in the gut wall are.

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Smooth

skeletal

Cardiac

Voluntary

Which one the following structures of kidney is involved in the production of concentrated rein.

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Glomerulus

Juxtamedullary nephron

Cortical nephron

Vasa recta

Which enzyme acts as molecular scissors.

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DNA ligase

DNA polymerase

RNA polymerase

Restriction endonuclease

Primary succession may start in a dry soil or rock is called.

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Hydrosere

Xerosere

Derosere

Desert

Which pair of chromosome fails to segregate in down's syndrome.

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7th

15th

19th

21st

The number of human spinal nerves is:

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24

50

62

64

Rapid movement of leaves of mimosa on touching is a example of.

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Turgor movement

Tropic movement

Nastic movement

Growth movement

The number of lumbar vertabrae are

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5

7

12

33

PSC 101 has antibiotic resistance gene for.

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Tetracycline

Neomycin

Ampicillin

Ergotine

The chromatin material gets condensed by folding and chromosomes appear as thin thread in mitosis at the beginning of.

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Inter phase

Pro phase

Ana phase

Meta phase

Mature bone cells are called as

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osteocytes

Chondrocytes

Osteoblasts

Blastocytes

Which of the following statements conserning the role of Ca⁺² inthe contraction of skeletal muscle is correct?

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The mitochondria act as a store of Ca⁺²for the contractile process

Ca⁺²entry across the plasma membrane is important in sustaining the contraction of skeletal muscle

A rise in inter cellular Ca⁺²allows actin to interact with myosin

The tension of a skeletal muscle fiber is partly regulated by G proteins muscle

Bats and humming birds are called.

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Ectotherms

endotherms

Heterotherms

Mesotherms

Nociceptors produce sensation of

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Touch

Pain

Warmth

Pressure

A form of air pollution in which airbone acids produced by electric utility plants and other sources fall to Earth in distant regions is

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Acid rain

Basic rain

Heavy rain

Drizzling

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