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Other quiz:

Types of Immunity › View

Why does active immunity remains for a long period of time?

A. Due to prolong injection of antibodies into human body

B. The presence of phagocytes to engulf the pathogens

C. Increase in mast cells that help produce histamine

D. Production of memory B cells that increase antibodies

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Eco Factors & Bacteria › View

Jelly like substance that fills the inside of the bacterial cell.

A. Flagella

B. Chromosome

C. Plasmid

D. Cytoplasm

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