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Biology

Biology
Acetylcholine is

Vitamin
Enzyme
Toxin
Chemical transmitter

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Biology
Nitrogen fixation process in the soil is done by

Bacteria
Fungi
Virus
Protoza

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Biology
They play key roles in the contraction of muscles,digestion of food and clotting of blood.

Carbohydrates
Vitamins
Proteins
Fats

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Biology
Prothrombin which helps in clotting of blood is released by

erythrocytes
blood platelets
monocytes
lymphocytes

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Biology
Primary phloem develops from

ateral meristem
extrastelar cambium
protoderm
. provascular tissue

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Biology
Of the following ,which of the most fundamental generalization in biology?

Discovery of Cell
Microscope
Cell theory
Micor-biology

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