Question # 1

The gas produced in mesophyll cells as by product during day time is called.

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Oxygen

Carbon dioxide

Nitrogen

Chlorine

Adenine always pairs with:

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thymine

guanine

cytosine

uracil

Which of these addictive drugs are also used as painkillers?

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Narcotics

Sedatives

Hallucinogens

All can be used

Branch of biology that deals with the study of inheritance is called as:

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Artificial selection

Natural selection

Genetics

Histology

The process of gaseous exchange involves.

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Break down of C-H bounds to yield energy.

Physical movements that take air ain and our of body

Getting oxygen from the air and removing carbon dioxide

Transport of oxygen by the blood to different parts of the body.

How many carciogens are present in cigarette smoke?

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40

50

60

70

One organism kills and feed on other organism is called.

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Predation

Parasitism

Mutuatism

Commensalism

Power of speaking is only gifted to:

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Human being

Monkey

Parrot

Crow

Arthritus means:

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fracture

inflammation

crystallization

deficiency of calcium

The populations that live in a habitat nad interact with one another are collectively called:

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Biosphere

Ecosystem

Community

Species

Ribisome reads the sequence of mRNA nucleotides and joins specific amino acids to form protein. This step is known as:

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Combination

Replication

Transcription

Translation

Example of Endoparasite is.

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Plasmodium

Mosquito

Leech

Lices

A relationship between species in which both species benefit is called.

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Parasitism

Mutualism

Symbiosis

Commensalism

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