Question # 1

Genetic code for the amino acid methionine is.

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AUC

UGC

CGC

AUG

What would be expected to happen if all the nitrogen-fixing organisms ceased to exist?

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There would be no significant change in number of animals

The total number of biomass would be reduced

All organisms would die out

The nitrogen level of the atmosphere would be increase

The wall of trachea(windpipe) and bronchi of man is fernished with a series of incomplete:

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Cartilagenous plates

Chitinous rings

Cartilaginous rings

Muscular rings

Contractile ring in cytokinesis is formed by

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Tubulin

Actin and Myosin

Keratin

Cyclin

Meiosis occurs only in

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Haploid cell

Diploid cells

Pentaploid cells

Triploid cells

Archaebacteria tolerate temperatures up to

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10^oC

40^oC

67^oC

120^oC

Innate behavior is all except;

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Coded in DNA

Modified in individuals life span

Modified with species evolution

Programmed responses to external stimuli

A monochromat can perceive

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Three colours

Yellow colours

Only ane colour

Two colours

Hemoohilia is.

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Affects both sexes equally

Affects men more than woman

Affects women more than men

Is non allelic recessive sex linked

The first restriction enzyme was isolated by

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Kary mulis

Hamilton O. smith

Sagar

Maxam gilbret

The loss of water due to ex osmosis from plant cells causes plant to.

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Turgid

Wilt

Rupfure

Seell

If an mRNA is synthesized with the differnt codons, what is the minimum number of amino acids in the protein that is formed by the mRNA?

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64 Amino acids

62 Amino acids

60 Amino acids

None of them

Hemodialysis means

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Removing the blood

Cleaning the blood

Storing the blood

diluting the blood

Amino acid attachment site of tRNA is.

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G-end

2' -end

3'- end

5' -end

The basic difference betweenn spermatogenesis and oogenesis is that :

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During spermatogenesis two more polar bodies are produced

The mature ovum is haploid while the sperm is 1n

Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced

Microscopic gap between the two neurons is called as

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Synapsis

Collapse

Preapse

Axons

Every gene starts with initiation codon AUG which encodes for the amino acid.

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Lysine

Serine

Proline

Methionine

Etiolated plants grow without.

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Water

Light

O2

CO2

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