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Biology

Biology
The rate of heartbeat is accelerated by the hormone

Pituitrin
Adrenaline
Acetylcholine
Thyroxine

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Biology
The basic unit of the nervous system is the

Lymphs
Nerves
Neurons
Nephrons

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Biology
It is composed of two polynucleotide chains which are coiled round each other in the form of a double helix.

RNA
DNA
Fats
None of these

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Biology
Which of the following gas is necessary for the process of photosynthesis?

CO
N2
O2
CO2

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Biology
In birds, some of the vertebrae are fused to form

Keel
Synsacrum
Syncytium
Furcula

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Biology
Pepsin is a

Vitamin
Enzyme
Hormone
Mineral

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