Question # 1

In earthworm exchange of gases mainly takes place through.

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Gills

Lungs

Skin

Ostla

When blood leaves the capillary bed most of the carbon dioxide is in the form of

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Carbonate ions

Bicarbonate ions

Hydrogen ions

Hydroxyl ions

From one pyruvate passing through Krebs cycle how many FADH2 molecules are formed.

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01

02

03

04

Which one of the following is employed in treatment of cancer

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Antibiotics and cancer

Radiotherapy and chemotherapy

Chemotherapy and antibiotics

All of the above

Chemical nature of most cellular secretion is.

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Proteins

Lipids

Carbohydrates

Glycoproteins

Cell wall is secreted by

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Protoplasm

Nucleoplasm

Ribosome

Golgi complex

Enzyme lower down the energy of.

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Kinetic

Potential

Activation

Ionic

Lichens are very good bio indicators of.

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Air quality

Soil quality

Water quality

Mineral

Prototherian are commonly called.

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Egg laying mammals

placental mammals

Pouched mammals

None of these

Tests of foraminifera, are made up of.

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Silica

Calcium

Chitin

Magnesium

Resolution power of a typical compound. microscope is.

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300 x

1.0 micro meter

2.0 micro meter

2-4 Angstron

The fossil fuels are

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Coal

Oil

Gas

All a,b and c

The cytoplasmic process/fibre which carry impulse towards cell body is called.

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Dendron

Axons

Neurofibrils

Nissl's granules

The sensation of pain is produced by

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Chemoreceptors

Photoreceptors

Nociceptors

Mechanoreceptors

Nephridia are the excretory structures present in.

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Hydra

Planaria

Cockroach

Earth worm

The chances of teenage mother having down's syndrome child is.

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One in one hundred

One in many thousand

One in one thousand

One in ten thousand

Which of the following hormones is not released by the anterior pituitary?

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Melanocyte - releasing hormone

Gonadotropin-releasing harmone

Thyroid- stimulating hormone

Growth hormone

Recombinant DNA is introduced into the host cell by means of a.

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Vector

Phage

Bacterium

Fungus

Temperate deciduous forest are located in Pakistan at.

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Chilas

Mian wali

Shogran

Sindh

DNA threads are chemically cut into pieces of different sizes in

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Maxam-Gilbert method

Sanger's method

Smith's method

Sanford's method

Menstruation usually lasts for

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3 - 7 days

2 - 5 days

1 - 3 days

5 - 7 days

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

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Hydrosere

Xerosere

Derosere

Desert

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