Question # 1

Surface temperature of the Sun is

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3000 oC

6000 oC

15000 oC

1,500,000 oC

Chromosomes consist of DNA and.

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Sperms

Gametes

Proteins

Eggs

------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.

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Waisting of energy

Destroy fo energy

Transfer of energy

Produce of energy

In dilute HCl blue litmus turns.

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Orange

Yellow

Red

Pink

Hubble telescope orbits the Earth at a height of about.

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550 km

560 km

500 km

600 km

Act as instructions to make specific proteins

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Eggs

Gametes

Genes

Protein

Carbon burns in air to release energy along with the formation of.

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Carbon dioxide and hydrogen

Carbon monoxide and hydrogen

Carbon di oxide

Carbon dioixe and water

The basic physical and functional unit of heredity is called.

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DNA

RNA

Centronere

Gene

In humans, the eye colour is developed due to the effects of.

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Diet

Environment

Genes

Both a and b

How many periods are there in the Periodic Table.

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Five

Six

Seven

Eight

It is use ful for stimulating growth.

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Vaccines

Interferon

Beta-endorphin

Growth hormone

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