P - Assertion: Some bacteria are Gram-negativ | vedclass

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(A) Gram staining is a technique used to differentiate bacteria into two groups: Gram-positive and Gram-negative.Gram-positive bacteria retain the cry

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$P$ and $Q$ are true,and $P$ is the correct explanation of $Q$.

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(A) Gram staining is a technique used to differentiate bacteria into two groups: Gram-positive and Gram-negative.Gram-positive bacteria retain the crystal violet stain (appearing purple),while Gram-negative bacteria do not retain the crystal violet stain and take up the counterstain (safranin),appearing pink or red.Therefore,the assertion that some bacteria are Gram-negative is true.The reason that Gram-negative bacteria do not retain the Gram stain (crystal violet) is also true and serves as the definition/explanation for why they are classified as Gram-negative.Thus,both statements are true,and $P$ explains $Q$.

Column-$I$ (Habitat)	Column-$II$ (Archaebacteria)
$P$. Salty areas	$I$. Thermoacidophiles
$Q$. Marshy areas	$II$. Methanogens
$R$. Hot springs	$III$. Halophiles

$P$ - Assertion: Some bacteria are Gram-negative.
$Q$ - Reason: Gram-negative bacteria do not retain the Gram stain.

Similar Questions

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Select the correct pair.

Match the following columns:
Column-$I$ (Habitat) Column-$II$ (Archaebacteria)
$P$. Salty areas $I$. Thermoacidophiles
$Q$. Marshy areas $II$. Methanogens
$R$. Hot springs $III$. Halophiles

Which of the following kingdoms consists of organisms that lack membrane-bound organelles?

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$P$ - Assertion: Some bacteria are Gram-negative.$Q$ - Reason: Gram-negative bacteria do not retain the Gram stain.