Question # 1

Which one of the following kinds of atom does not occur in carbohydrates

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Carbon

Hydrogen

Nitrogen

Oxygen

An activated enzyme made of polypeptide chain and a co-factor is

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Substrate

Co-enzyme

Apoenzyme

Holoenzyme

To produce Lactose

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Two amino acids must form a peptide bond

Pairing of nitrogenous bases must occur between nucleotides

Glucose and galactose must undergo a dehydration reaction

Glucose and fructose must undergo a hydrolysis reaction

Cell membrane is chemically composed of proteins.

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10 -20 %

20- 30%

40-50 %

60-80%

Blood contains ______ oxygen per 100 ml of blood when haemoglobin is 98% saturated

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19.6 ml

18.6 ml

16.6 ml

17.6 ml

Tartaric acid is obtained from a plant of family.

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Fabaceae

Rosaceae

Solanaceae

Caeselpinlaceae

Important vector is modern genetic engineering is.

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Nucleoid

Mesosome

Plasmid

Ribosome

Cytoplasmic strands that extend through pores in adjacent cell wall are.

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Plasmodesmata

Plasm filament

Plasmostrand

Plasmo fibre

Enzymes which convert dipeptide into amino acids is named as

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Erypsin

Pepsin

Trypsin

Amino peptidase

The number of species of insects are.

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22.5%

17.6 %

15.5%

53.4%

Some fungi are used to control environmental pollution, the process is called.

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Biologicals control

Fungal culture

Bioremediation

Hydroponic

Who was the first to propose an objective definition of instincts in terms of animal behaviour

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Darwin

Lamarck

Wallace

Lyell

The most threatened areas on the earth have been reduced to 44% of their original extent are

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Tropical rain forests

Temperate rain forests

Carbiniferous forests

Deciduous rain forests

In 1999,transgenic crops were planted world wide on more than

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20 millions areas

35 millions areas

70 millions areas

90 millions areas

The most important hormone in initiating and maintaning lacation after birth is:

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Estrogen

FSH

Prolatin

Oxytocin

The outer layer of the blastocyst, which laterattaches tothe uterus , is:

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Deciduas

Trophoblast

Ammion

Inner cell mass

A willow 10 centimetres (4 inches) high may have a trunk 7 centimetres (3 inches) in diameter and be 50 years old in

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Taiga

Tundra

Desert

Savanna

Transgenic bacteria are produced in large vats called.

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Transducer

Bioreactor

Biomultipller

Culter media

Which one of the following is not a joint diseases.

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Arthritis

sciatica

Disc slip

spondylosis

The remoras benefit from this relationship the shark is not affected at all.

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symbiosis

Mycorrhiza

Mutualism

Commercialism

The number of nucleotides in the DNA of a typical human chromosome is about

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10 Million

40 million

80 million

140 million

The corpus luteumscetres a hormone called.

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Oxytocine

Progestrone

Testostrone

Ostrogen

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