Question # 1

Who suggested that mosquitoes are involved in the transmission of malaria?

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Laveran

Ronald Ross

A.F.A king

None of these

Prokaryotic ribosomes is ...................

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20s

30

70s

80s

The potential energy is stored in chemical bonds and is released as _____________ energy when these bonds break.

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Heat

Light

Kinetic

Solar

Chloroplast helps in _______________

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Photosynthesis

Respiration

Brething

Digestion

A gardener sees a large snake nearby. he knows generally snakes sting, so the gardener ran away. The gardener did which of the following?

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Used reasoning

Used observation

Constructed a theory

Tested a hypothesis

Phloem tissues are made up of:

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Tracheids & Vessel cells

Tracheid & companion cells

Sieve tube cells & companion cells

Sieve tube cells & trancheids

In Pakistan the forest area is _____________

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2.5%

5.2%

6.5%

5.5%

................ occurs in somatic cells.

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Meiosis I

Meiosis II

Mitosis

None

One molecule of glucose when broken down into CO2 H2O in aerobic respiration generates ........... ATP molecules.

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36 ATP

37 ATP

38 ATP

None of them

Which of the following is a type of leukocyte?

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Macrophage

Eosinophil

Monocyte

All of the above

Which of the following chambers has the thickest walls in human heart?

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Right atrium

Left atrium

Left ventricle

Right ventricle

Penicillin is discovered by:

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^{Joseph Lister}

Edward jenner

Alexander Flemming

Bu Ali Sina

Breakdown of glucose molecule in the presence of oxygen called :

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Glycolysis

Mytosis

Both a and b

None of these

Conversion of urea and uric acid into Ammonia is called.

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Assimilation

Nitrogen fixation

Ammonification

Biological fixation

The correct match for the fermentation product and organism involved is.

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Formic Acid - Saccharomyces

Ethanol- Saccharomyces

Ethanol-Asperellus

Glycerol-Aspergillus

the type of symbolic association in which partner gets benefits while other is neither benefited nor harmed is called:

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Commensalism

Mutualism

Parasitism

Predation

The female reproductive part of flower is:

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Carpels

Sepals

Petals

Stamens

During binary fission, the nucleus of parent organism divides into two by:

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Sexual reproduction

Meiosis

Mitosis

None of these

Pathogens contain special proteins called.

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Antigens

Antibodies

Antibiotics

Antiseptics

Habitat destruction can result in a loss of:

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Species

Population

Community

Ecosystem

How many bronchi are there in the air passageway?

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One

Two

Many

None of these

Alternatives forms of a gene are called:

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Allele

DNA

Chromosome

Gamete

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