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.'