Question # 1

The specificity of an enzyme is due to its

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Cofactor

Protein nature

Active site

Globular shape

Necrosis of neural tissue takes place during.

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Myocardial infarction

Cerebral infraction

Haemorrhage

Hypertension

Which is stimulus for cyclic phosphorylation.

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Low CO2

Low O2

Low ATP

Low NADPH

In fungi spores are produced inside the reproductive structure called.

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Conidia

sporangia

Ascocarps

Basida

Golgi apparatus is concerned with cell.

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Division

Lysis

Secretion

Storage

The classification of algae into phyla is largely based on the composition.

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Cell wall

Cell membrane

Pigments

Cytoplasm

The pressure flow theory was first proposed in 1930

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Emst hackel

Ernst Munch

Dixon

Hemming

The percentage by weight of RNA in a bacteria cell is.

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0.25%

2%

3%

6%

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

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Substrate

Co-enzyme

Apoenzyme

Holoenzyme

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

The heart of fish is

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Single circuit

Double circuit

Triple circuit

Muti circuit

The term niche was first proposedly joseph Grinnell an American.

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Embryologist

Ecologist

Ornithologist

Physiologist

Water is stored for use during the period of drought in fleshy stems of

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Cacti

Euphoribia

Both a & b

None of these

Jean Baptiste Lamarck published his theory of evolution in

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1757

1809

1859

1945

Temperate deciduous forest are located in Pakistan at.

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Chilas

Mian wali

Shogran

Sindh

The series of changes which involve period of growths replication of DNA followed ny cell division may be named as

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DNA cycle

Nuclear cycle

Cell cycle

Chemical cycle

Excretory structure present in cockroach are.

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Contractile vacuole

Malpighian tubules

Nephridia

Flame cells

Movement shown by sperms of liver Worts, mosses, forns towards archegonia is a.

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chemotactic movement

Photoactic movement

Chemotropic movement

Phototropic movement

Which tumor is delocalized or has branches other than site of orgin.

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Benign

Malignant

Both

Apoptosis

The rate of heat production is increased by increasing muscle contraction by movement is called.

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Thermoregulation

Shilvering thermogenesis

Non shievering

Thermostat thermogenesis

What are significant happening of meiosis.

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Crossing over

Random assortment of chromosome

Linkage

Crossing over and random assortment of chromosomes

Secretin is a hormone produced by

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Liver

Gut

Adrenals

Pancreas

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