Question # 1

Mitochondria store _______________

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AMP

ADP

ATP

None

Chromosomes are not visible during:

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Anaphase

Prophase

Interphase

Metaphase

Stomata close when the guard cells:

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Lose water

Gain chloride ions

Become turgid

Gain potassium ions

In adult human, the esophagus is about _____________ long.

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25 cm

25 mm

25 m

25 ft

Cell membrane i present in _______________ cells.

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Plants

Animals

Both

NOne

Cat' lion and tiger belong to genus _____________

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Felis

Ficus

Homo

Tigris

Activation energy is required to:

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Activation enzyme

Start a reaction

Speed up a reaction

None

Anaerobic respiration is of ......... types.

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Two

Three

Four

Five

What is true about cofactors?

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Break hydrogen bonds in proteins

Help facilitate enzyme activity

Increase activation energy

Are composed of proteins

Chloroplast helps in _______________

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Photosynthesis

Respiration

Brething

Digestion

_____________ is the total variety of life on earth.

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Biological diversity

Chemical divesity

Physical diversity

All of above

Amount of Urea in normal chemical composition is.

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9.3 g/l

1.87 g/l

1.17 g/l

0.75 g/l

Livingof Nitrogen bacteria in the roots nodules of Leguminous plant is an example of :

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Predation

Parasitism

Mutualism

Commensalism

Cloning is latest method of :

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Tissue culture

Vegetation propagation

Cutting

Grafting

All populations collectively are called:

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Species

Biome

Community

Ecosystem

The populations that live in a habitat and interact with one another are collectively called.

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Biosphere

Ecosystem

Community

species

After fertilization on plants, the fruit develops from:

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Ovule wall

Ovary wall

Petals

Anther

Which of these micro-organism is used in the production of formic acid?

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Aspergillus

Bacillus

Saccharomyces

None of these

Example of discontinuous variation is:

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Blood group

Height in Man

Intelligence

None of these

Human Insulin was prepared by bacteria first time.

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2002

1990

1970

1978

In our body skeleton works very closely with the _________ system.

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Muscular

Nervous

Endocrine

All of these

Organisms in the ecosystem that are responsible for the recycling of plant and animal wastes are:

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Consumers

Producers

Decomposer

Competitors

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