Question # 1

Which of the following tissue layer is found in all blood vessels?

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Smooth muscle

Endothelium

Skeletal muscle

Connective tissue

Magnification of electron microscope is:

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2500 x

250,000 x

25000 x

None

The chloroplast functions in______.

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ATP synthesis

Protein synthesis

Photosynthesis

DNA replication

The 6-carbon compounds during the dark reactions of photosynthesis split into ____________ carbon compound.

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5

3

7

4

Form which bonds of ATP molecule, energy is taken?

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P-P bonds

C-H bonds

C-N bonds

C-O bonds

Enzymes accelerate reactions by_______the activation energy needed for the reaction.

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Stopping

Raising

Lowering

Binding

Experimentation is only a step of the scientific process but it is very important step because it always:

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Gives the biologist a correct result

Allows rejection of some alternative hypothesis

Ensures that hypothesis can be confirmed with certainity

Give scientists a chance to work in the laboratory

People who used mosquito nets suffered ____________ from malaria.

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More

Less

Both

None

When an enzyme is no longer able to work, it is said to be:

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Catalyzed

Dead

Cofactored

Denatured

No life would be possible if the process of .............. stops.

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Respiration

Photosynthesis

Both

None

................... is the most acceptable model to understand the structure of well membrane.

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Sandwich permeable

Fluid Mosaic Model

Darwin Model

All

Neuron fiber which carry away nerve impulses from cell body.

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Dendrites

Axons

Synapsis

Myelin Sheath

The process which maintain the internal condition of body at equilibrium despite changes in the external environment is called.

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Homeostasis

Excretion

Absorption

Tubular Secretion

Resin as waste materials, is excreted from.

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Conifers

Tomato

Kikar

Rubber

Transmission of character (traits) from parent offspring is called:

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Inheritance

Mutation

Regeneration

Reproduction

Hind brain does not include :

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Pons

Medulla oblongata

Celebrum

Celebelium

The largest part of the fore brain is:

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Hypothalamus

Thalamus

Cerebelium

Celebrum

The elongation of eye-ball results in.

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Myopia

Blindness

Deafness

None of these

Sir Alexander flaming was awarded the Nobel prize in.

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1940

1945

1950

1960

Which type of coordination is present in plants:

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Chemical Coordination

Mechanical Coordination

Nervous Coordination

Electrical Coordination

Which plant is not found in the form of underground bulb?

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Garlic

Tulip

Onion

Lily

The primary chemical stimulus for breathing is the concentration of.

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Carbon dioxide in blood.

Oxygen in blood

Carbon oxide in muscles

Oxygen in muscles.

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