Penicillin is effective against gram-positive as well as gram-negative bacteria.

True

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False

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Solution

The correct option is B False
Penicillin is effective only against Gram-positive bacteria because Gram-negative bacteria have a lipopolysaccharide and protein layer that surrounds the peptidoglycan layer of the cell wall, preventing penicillin from attacking.

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Q. Assertion :Penicillin (G) is an antihistamine. Reason: Penicillin (G) is effective against gram positive as well as gram negative bacteria.

A narrow spectrum antibiotic is active against .................
(a) gram positive or gram negative bacteria
(b) gram negative bacteria only
(c) single organism or one disease
(d) both gram positive and gram negative bacteria

Q. Which of the following statements is accurate in explaining why Gram negative bacteria are generally more resistant to penicillins than Gram positive bacteria?

Q. Which of the following stain/s is used by Hans Christian Gram to classify bacteria as gram negative and gram positive bacteria?

Gram negative bacteria are resistant to penicillin because..

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Penicillin is effective against gram-positive as well as gram-negative bacteria.

The correct option is B FalsePenicillin is effective only against Gram-positive bacteria because Gram-negative bacteria have a lipopolysaccharide and protein layer that surrounds the peptidoglycan layer of the cell wall, preventing penicillin from attacking.

The correct option is B False
Penicillin is effective only against Gram-positive bacteria because Gram-negative bacteria have a lipopolysaccharide and protein layer that surrounds the peptidoglycan layer of the cell wall, preventing penicillin from attacking.