Question # 1

The asexual reproduction in sponges occurs by.

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Budding

Spores

Fragmentation

Conidia

Lungs are covered by double layered thin membranous sacs called.

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Pleura

Larynx

Air sacs

Diaphragm

Citric acid is obtained from

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Penicillium

Aspergillus

Saccharomyces

Neurospora

Glycogen is an example of a

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Polysaccharide only

Carbohydrate only

Phospholipid

Both a polysaccharide and a carbohydrate

The maximum depth of roots of prospis is.

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40 meters

50 meters

60 meters

70 meters

An isolated virus is not considered living, since it

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Separates into two inert parts

Cannot metobolize

Rapidly looses its gnome chemically inert

Is coated with an airtight shield

Sleazing and swallowing type of macro phaseouts feeding is found in.

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Aphids

Hydra

Mussels

spotted dog fish

Globular proteins differ from fibrous proteins in

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Having more amino acids

Their repeating units joined by peptide bond

Being soluble in aqueous medium

Being non-crystalline

Which of the following animals has no need for a gall bladder

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Cat

Man

Lion

Goat

Which one of the following is not a viral disease

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Cowpox

Mumps

Tetanus

Small pox

In lichens, fungus protects the algal partner from

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Strong light

High temperature

Desiccation

Both a and c

The random loss of alleles in a population is called:

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Mutation

Selection

Gene flow

Genetic drift

Amino acid attachment site of tRNA is.

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G-end

2' -end

3'- end

5' -end

Each Okazaki fragment is synthesized by.

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RNA Polymerase

DNA polymerase

DNA polymerase I

DNA polymerase III

Trisomy of chromosome 18 is found in.

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Down's syndrome

Edward syndrome

Patau syndrome

Jacob's syndrome

Human skin colour is also a quantitative trait which is controlled by

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3 - 6 gene pairs

1 - 3 gene pairs

None of these

Highly condensed portions of the chromatin are called.

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Homochromatin

Heterochromatin

Euchromatin

Achromatin

The protein filament whihc binds to the calcium is

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Actin

Myosin

Troponin

Tropomyosin

What does not happen during inspiration in man?

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Intercoatals musles contract

Ribs are elevated

Diphragm becomedome- shaped

Ribs move forwards

Which animal moves by Jet propulsion

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Earth worm

Star fish

Jelly fish

Snail

Tubes that connect the middle ear with the throat in humans are called.

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eustachian tube

Fallopian tube

Neural tube

Nephridial tube

The first restriction enzyme was isolated by

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Kary mulis

Hamilton O. smith

Sagar

Maxam gilbret

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