General Knowledge of Pakistan

question bank

General Science & Ability

300

questions

289.

Which subatomic particle has no net electric charge?

Neutron

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290.

Which subatomic particle carries a positive electric charge?

Proton

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291.

Which subatomic particle carries a negative electric charge?

Electron

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292.

What is the central positively charged part of an atom called?

The nucleus

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293.

What pigment in green plants absorbs light for photosynthesis?

Chlorophyll

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294.

Which gas is released as a by-product of photosynthesis?

Oxygen

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295.

Which gas do plants absorb from the atmosphere during photosynthesis?

Carbon dioxide

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296.

Which process allows green plants to convert light energy into chemical energy?

Photosynthesis

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297.

How many pairs of chromosomes are normally present in a human body cell?

23 pairs

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298.

What molecule carries hereditary information in humans and most other organisms?

DNA (deoxyribonucleic acid)

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299.

Which cell organelle contains most of a eukaryotic cell's genetic material?

The nucleus

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300.

What is the basic structural and functional unit of life?

The cell

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