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Gram Staining

Assertion :Gr...

Question

Assertion :Gram-negative bacteria do not retain the stain when washed with alcohol. Reason: The outer face of the outer membrane of Gram-nagative bacteria contains lipopolysaccharides, a part of which is integrated into the membrane lipids.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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C

Assertion is correct but Reason is incorrect

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D

Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
lipopolysaccharides which are present on the outer face of the outer membrane of Gram-negative bacteria are soluble in alcohol and washed away with alcohol.
So the correct option is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.'

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Similar questions

Q. Given below is an assertion and reason.
A. Both assertion and reason are true with reason being the correct explanation
B. Both assertion and reason are true but reason is not correct explanation
C. Assertion is true, but reason is wrong
D. Both assertion and reason are wrong

Assertion: Gram negative bacteria do not retain the stain when washed with alcohol.
Reason: The cell wall of gram negative bacteria contains lipopolysaccharides, a part of which is integrated into membrane lipids.

Q. Given below is an assertion and reason.
Assertion: Gram negative bacteria do not retain the stain when washed with alcohol.
Reason: The cell wall of gram negative bacteria contains lipopolysaccharides, a part of which is integrated into membrane lipids.

Select the correct option:
A. Both assertion and reason are true with reason being the correct explanation
B. Both assertion and reason are true but reason is not correct explanation
C. Assertion is true, but reason is wrong
D. Both assertion and reason are wrong

Q. Assertion :Gram-negative bacteria do not retain the stain, when washed with alcohol. Reason: The outer face of the outer membrane of Gram-negative bacteria contains lipopolysaccharides, a part of which is integrated into the membrane lipids.

Q. Assertion :Gram negative bacteria do not retain the stain, when washed with alcohol. Reason: The outer membrane of Gram negative (-ve) bacteria contain lipopolysaccharides, a part of which is intergrated into membrane lipid.

Q. Assertion :Gram-negative bacteria do not retain the stain, when washed with alcohol. Reason: The outer face of the outer membrane of Gram - negative bacteria contains lipoplysaccharides, a part of which is integrated into the membrance lipids.

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