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Biology

Biology
The audible sounds that heart are made by the closing of the

Veins
Ventricle
Valve
Arteries

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Biology
Plant development is influenced by

quality of light only
quality, quantity and duration of light
quality and quantity of light
quality and duration of light

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Biology
Which of the following is responsible for giving colour to human skin?

Melanin
Luciferin
Haemoglobin
Flavonoids

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Biology
Potato blight is caused by

Smut
Ringworm
Meningitis
Penicillium

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Biology
Administering a vaccine provides protection by inducing synthesis of antibodies (proteins) specific of the vaccine. The cell in the body responsible for the production of antibodies is

Platelet
Lymphocyte
Granulocyte
Erythrocyte (red blood cell)

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Biology
What compound directly provides energy for cellular work?

ADP
NADH
NADP
ATP

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