Question # 1

............. is the movement of molecule from a region of higher concentration to a region of lower concentration.

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Osmosis

Diffusion

Both

None

Which of the following macro nutrient is the part of chlorophyll?

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Calcium

Magnesium

Sulphur

Iron

The Klinefelter's syndrome males have an extra .................... .chromosomes.

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Sex

Autosome

Both 1 & b

None

Which one are the sites of protein synthesis?

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Nucleus

Mitochondria

Endoplasmic reticulum

Ribosomes

the division of cytoplasm is called ............. .

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Karyokinesis

Cytokinesis

Anaohase

Telophase

When a plant was kept in darkness for many days, its leaves turnes yellow. Why?

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Leaves could not yet oxygen and so there was no photosynthesis

Leaves could not get light and so there was no respiration

Leaves could not get oxygen and so there was no respiration

Leaves could not get light and so there was no photosynthesis

A species is a group of natural population which can:

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Interbreed and produce offsprings

Interbreed in nature and produce offspring

Interbreed and produce fertile offspring

Interbreed in nature and produce fertile offspring

There are ____________ species of insect's and invertibrates.

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20,700 species

20,750 species

26,700 species

20,800 species

Plants cells have ______and________, which are not present in animal cells.

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Mitochondria, Chloroplasts

Cell membranes, cell walls

Chloroplasts, nucleus

Chloroplasts, cell wall

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

Viruses are not classified in any kingdom because:

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They are too poorly understood

They are too small

Their genetics cannot be determined

They are not considered organisms

................ is similar to mitosis.

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Meiosis I

Meosis II

Interphase

G-phase

______________ is an inorganic compound of carbon which have poor energy value.

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Glucose

ATP

CO₂

NADPH

The Molecule which have low molecular weight are called.

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Macromolecules

Micromoleules

Organic Molecules

In organic Molecules

Biodiversity is richer in :

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Tropics

Temperate regions

Polar regions

Desert

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