Question # 1

How many percent of the light falling on the leaf surface is absorbed:

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5%

6%

7%

1%

Fluid mosaic model explains the structure of:

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Cell membrane

Cytoplasm

Cell wall

Milochondria

A hypothesis must be testable to be scientifically valid. Being testable means that:

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Some observations could prove that hypothesis is incorect

Only a controlled experiment can indicate whether the hypothesis is correct or incorrect

The hypothesis is proven wrong

The opposite of hypothesis is tested and proven worng

Which solution has equal concentrations of solutes?

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Hypotonic

Hypertonic

Isotonic

Toxic

.......... is the most abundant .

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Chlorophyll a

Chlorophyll b

Chlorophyll c

Chlorophyll d

If gram of carbohydrates is fully oxidized it produce about .............. kilojoules of energy.

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16 Kilojoules

17 Kilojoules

18 Kilojoules

19 Kilojoules

ATP molecule was discovered by:

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Fritz Lipmann

Calvin

Karl Lohmann

Hans krebs

What may be the reason that children need more calcium and iron?

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Both calcium and iron for bones

Both calcium and iron for blood

Calcium for blood and iron for bones

Calcium for bones and iron for blood

When we add more substrate to an already occurring enzymatic reaction and there is no increase in the rate of reaction what would you predict?

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All active sites have been occupied by substrate molecules

The enzyme molecules have denatured

More substrate acted as inhibitor

More substrate has disturbed the pH of the medium

The division of nucleus is:

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Mitosis

Karyokinesis

Cytokinesis

Meiosis

Which of the following does not occur in the oral cavity?

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Lubrication of the food

Beginning of protein digestion

Breaking the food into small fragments

All of the above do occur in the oral cavity

No of steps of biological method are

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Six

Seven

Two

Eight

The cells which can divide in plants are:

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Sclerenchyma cells

Collenchyma cells

Parenchyma cells

Meristematic cells

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