(C) Antibodies,also known as immunoglobulins $(Ig)$,are glycoprotein molecules produced by plasma cells (differentiated $B$-lymphocytes).There are fiv

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(C) Antibodies,also known as immunoglobulins $(Ig)$,are glycoprotein molecules produced by plasma cells (differentiated $B$-lymphocytes).There are five main classes of antibodies in humans: $IgA, IgD, IgE, IgG,$ and $IgM$.$IgA$ is found in secretions like saliva,tears,and colostrum,while $IgE$ is involved in allergic reactions.Therefore,$IgA$ and $IgE$ are types of antibodies.

Class 12 Biology Human Health and Disease Immunity

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What are $IgA$ and $IgE$?

A
Types of $T$-cells
B
Types of $B$-cells
C
Types of antibodies
D
Types of antigens

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Class 12 Questions

Class 12

Biology Questions

Chapter

Human Health and Disease

Subtopic

Immunity

Which one of the following groups is associated with secondary lymphoid organs?

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Which of the following statements is incorrect?

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Interferons are secreted by which of the following?

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Match the following columns:

Column-$I$ Column-$II$

$P$. Physical barriers $I$. Acid in stomach,saliva in mouth,tears from eyes

$Q$. Physiological barriers $II$. Skin,mucus coating of epithelium lining the respiratory,gastrointestinal and urogenital tracts

$R$. Cellular barriers $III$. Interferons

$S$. Cytokine barriers $IV$. Polymorphonuclear leukocytes ($PMNL$-neutrophils),monocytes,$NK$ cells,macrophages

Column-$I$	Column-$II$
$P$. Physical barriers	$I$. Acid in stomach,saliva in mouth,tears from eyes
$Q$. Physiological barriers	$II$. Skin,mucus coating of epithelium lining the respiratory,gastrointestinal and urogenital tracts
$R$. Cellular barriers	$III$. Interferons
$S$. Cytokine barriers	$IV$. Polymorphonuclear leukocytes ($PMNL$-neutrophils),monocytes,$NK$ cells,macrophages