Question # 1

Which of the following variable is least likely to affect an enzymes rate of reaction?

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Temperature

pH

Carbon dioxide concentration

Enzyme concentration

The percentage of inorganic salts and in the plasma is:

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0.6

0.7

0.8

0.9

Nuclei of human cell contain ............ autosomes.

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23 pairs

22 pairs

12 pairs

14 pairs

The substance on which an enzyme act is called:

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Cofactor

Inhabitor

Coenzyme

Substrate

Chiasmata is formed during:

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Prophase I

Anaphase I

Prophase II

Anaphase II

Biodiversity means :

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Variety with in a species

Variety among the species

Variety within a species and among the species

None of these

The example of bulkiest cells are:

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Becteria

Bird eggs

Muscle cells

Verve cells

Jabir Bin Hayan was born in.

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Iraq

Iran

Pakistan

England

There are _______________ chromosomes in onion.

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46

18

16

23

_______________ described the nucleus as characteristics spherical body in plant cells.

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Robert hooke

Robert Brown

Leeuwenhoek

Dolland

___________ is a group of related genre.

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Family

Order

Class

Phylum

The visible portion of sunlight consist of ............... colours.

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Four

Five

Six

Seven

Organisms are classified in different groups on basis of characters.

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Similar

Homologous

Different

Both a and b

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