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(A) Tetanus is caused by the bacterium $Clostridium$ $tetani$,which produces a potent toxin. When a person is at risk of developing tetanus (e.g.,afte

Vedclass · Accepted Answer

Preformed antibodies

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(A) Tetanus is caused by the bacterium $Clostridium$ $tetani$,which produces a potent toxin. When a person is at risk of developing tetanus (e.g.,after a deep wound),they require immediate protection. This is achieved through passive immunization by administering preformed antibodies (antitoxins). This provides immediate immunity,which is crucial because the body does not have enough time to produce its own antibodies through active immunization.

Column-$I$	Column-$II$
$(a)$ Physical barrier	$(1)$ Skin
$(b)$ Physiological barrier	$(2)$ Interferon protein
$(c)$ Cellular barrier	$(3)$ Leucocytes
$(d)$ Cytokine barrier	$(4)$ Saliva in the mouth

Which of the following can be used to provide immunity to a person who is at risk of developing tetanus?

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The figure given below shows an antibody molecule. Name the parts $A, B$ and $C$.

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Antibodies are produced by............

Match the columns:

Column-$I$ Column-$II$

$(a)$ Physical barrier $(1)$ Skin

$(b)$ Physiological barrier $(2)$ Interferon protein

$(c)$ Cellular barrier $(3)$ Leucocytes

$(d)$ Cytokine barrier $(4)$ Saliva in the mouth

Which cells secrete interferons?

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