(D) Antibiotics like penicillin are effective against bacterial infections,whereas the common cold is caused by viruses.Penicillin works by inhibiting

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Both Assertion and Reason are incorrect.

(D) Antibiotics like penicillin are effective against bacterial infections,whereas the common cold is caused by viruses.Penicillin works by inhibiting bacterial cell wall synthesis,leading to the lysis of bacterial cells.It has no effect on viruses because viruses lack a cell wall and the metabolic machinery that penicillin targets.Therefore,both the Assertion and the Reason are incorrect.

Class 12 Biology Human Health and Disease Mix Examples - Human Health and Disease

Medium

$A$: Antibiotics like penicillin can be used to treat common cold.
$R$: Penicillin causes lysis of viral cells.

A
Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
B
Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
C
Assertion is correct,but Reason is incorrect.
D
Both Assertion and Reason are incorrect.

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Class 12

Biology Questions

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Human Health and Disease

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Mix Examples - Human Health and Disease

Choose the correct pair:

Medium

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Match the following items in List-$I$ with List-$II$:
List-$I$ List-$II$
$(1)$ Peyer's patches $(A)$ Autoimmune disease
$(2)$ Thymus $(B)$ Hallucinogen
$(3)$ Hashimoto's disease $(C)$ Primary lymphoid organ
$(4)$ $LSD$ $(D)$ Virus
$(5)$ Chikungunya $(E)$ Secondary lymphoid organ

Medium

View Solution

Match the following columns correctly.

Column-$I$ Column-$II$ Column-$III$

$(a)$ $Streptococcus$ $pneumoniae$ $(p)$ $3-7$ days $(z)$ Common cold

$(b)$ $Salmonella$ $typhi$ $(q)$ $1-3$ weeks $(x)$ Typhoid

$(c)$ $Rhinovirus$ $(r)$ $1-3$ days $(y)$ Pneumonia

Column-$I$	Column-$II$	Column-$III$
$(a)$ $Streptococcus$ $pneumoniae$	$(p)$ $3-7$ days	$(z)$ Common cold
$(b)$ $Salmonella$ $typhi$	$(q)$ $1-3$ weeks	$(x)$ Typhoid
$(c)$ $Rhinovirus$	$(r)$ $1-3$ days	$(y)$ Pneumonia

Medium

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In the given diagram of the life cycle of Plasmodium in the mosquito,what does the part labeled '$a$' represent?

Medium

View Solution

Match the incorrect pair.

Medium

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List-$I$	List-$II$
$(1)$ Peyer's patches	$(A)$ Autoimmune disease
$(2)$ Thymus	$(B)$ Hallucinogen
$(3)$ Hashimoto's disease	$(C)$ Primary lymphoid organ
$(4)$ $LSD$	$(D)$ Virus
$(5)$ Chikungunya	$(E)$ Secondary lymphoid organ

$A$: Antibiotics like penicillin can be used to treat common cold.$R$: Penicillin causes lysis of viral cells.

Similar Questions

Choose the correct pair:

Match the following items in List-$I$ with List-$II$:List-$I$List-$II$$(1)$ Peyer's patches$(A)$ Autoimmune disease$(2)$ Thymus$(B)$ Hallucinogen$(3)$ Hashimoto's disease$(C)$ Primary lymphoid organ$(4)$ $LSD$$(D)$ Virus$(5)$ Chikungunya$(E)$ Secondary lymphoid organ

Match the following columns correctly. Column-$I$ Column-$II$ Column-$III$ $(a)$ $Streptococcus$ $pneumoniae$ $(p)$ $3-7$ days $(z)$ Common cold $(b)$ $Salmonella$ $typhi$ $(q)$ $1-3$ weeks $(x)$ Typhoid $(c)$ $Rhinovirus$ $(r)$ $1-3$ days $(y)$ Pneumonia

In the given diagram of the life cycle of Plasmodium in the mosquito,what does the part labeled '$a$' represent?

Match the incorrect pair.

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$A$: Antibiotics like penicillin can be used to treat common cold.
$R$: Penicillin causes lysis of viral cells.

Match the following items in List-$I$ with List-$II$:
List-$I$ List-$II$
$(1)$ Peyer's patches $(A)$ Autoimmune disease
$(2)$ Thymus $(B)$ Hallucinogen
$(3)$ Hashimoto's disease $(C)$ Primary lymphoid organ
$(4)$ $LSD$ $(D)$ Virus
$(5)$ Chikungunya $(E)$ Secondary lymphoid organ

Match the following columns correctly.

Column-$I$ Column-$II$ Column-$III$

$(a)$ $Streptococcus$ $pneumoniae$ $(p)$ $3-7$ days $(z)$ Common cold

$(b)$ $Salmonella$ $typhi$ $(q)$ $1-3$ weeks $(x)$ Typhoid

$(c)$ $Rhinovirus$ $(r)$ $1-3$ days $(y)$ Pneumonia