Match the columns: Column-I Column-II | vedclass

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(A) The correct matching is as follows:$(a)$ Physical barrier: The skin on our body is the main barrier which prevents the entry of microorganisms. Th

Vedclass · Accepted Answer

$a-1, b-4, c-3, d-2$

Vedclass · Answer

(A) The correct matching is as follows:$(a)$ Physical barrier: The skin on our body is the main barrier which prevents the entry of microorganisms. Thus,$(a-1)$.$(b)$ Physiological barrier: Acid in the stomach,saliva in the mouth,and tears from eyes prevent microbial growth. Thus,$(b-4)$.$(c)$ Cellular barrier: Certain types of leukocytes (WBCs) like polymorphonuclear leukocytes ($PMNL$-neutrophils) and monocytes and macrophages in blood and tissues can phagocytose and destroy microbes. Thus,$(c-3)$.$(d)$ Cytokine barrier: Virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Thus,$(d-2)$.Therefore,the correct sequence is $(a-1, b-4, c-3, d-2)$.

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

Column-$I$	Column-$II$
$1.$ Saliva and tears	$a.$ Cytokine barrier
$2.$ Mucus coating	$b.$ Cellular barrier
$3.$ $PMNL$	$c.$ Physiological barrier
$4.$ Interferons	$d.$ Physical barrier

List-$I$	List-$II$
$(a)$ $IgG$	$(i)$ Protection of body surfaces
$(b)$ $IgA$	$(ii)$ Regulation of allergic reactions
$(c)$ $IgM$	$(iii)$ Activates $B$-cells
$(d)$ $IgD$	$(iv)$ Protection of body fluids
$(e)$ $IgE$	$(v)$ Protection of blood circulation

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

Similar Questions

Assertion $A$: Vaccination protects an individual against infection by specific pathogens.
Reason $R$: $B$ and $T$ memory cells produce antibodies in large quantities to neutralize the pathogen attack.
Which option is correct for Assertion $A$ and Reason $R$?

Match the following columns:
Column-$I$ Column-$II$
$1.$ Saliva and tears $a.$ Cytokine barrier
$2.$ Mucus coating $b.$ Cellular barrier
$3.$ $PMNL$ $c.$ Physiological barrier
$4.$ Interferons $d.$ Physical barrier

Primary lymphoid organs $- P$
Secondary lymphoid organs $- Q$
$I -$ Appendix, $II -$ Peyer's patches of small intestine,
$III -$ Thymus, $IV -$ Spleen, $V -$ Lymph node, $VI -$ Bone marrow, $VII -$ Tonsils
Select the correct option for $P$ and $Q$.
$\quad P \quad \quad Q$

Where are memory cells produced?

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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