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

Erythrocyte (red blood cell)
Granulocyte
Platelet
Lymphocyte

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Biology
Neurospora is used as genetic material because

the product of single meiosis can be easily analysed
is a diploid fungus
it has short life cycle of 10 days
meiotic products are linearly arranged in the form of ordered tetrads

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Biology
Kwashiorkor disease in children is caused by

Sufficient carbohydrates but less fats in diet
Sufficient fats but deficient vitamins in diet
Sufficient carbohydrates and fats but deficient proteins in diet
Sufficient vitamins but deficient fats in diet

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