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

Granulocyte
Erythrocyte (red blood cell)
Platelet
Lymphocyte

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Biology
Neurospora is used as genetic material because

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

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Biology
The kidneys are stimulated to produce renin

When the specific gravity of urine rises above 1.10
By a decrease in the blood pressure
When the pH of the urine decreases
When the peritubular capillaries are dilated

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