BIOLOGICAL CLASSIFICATION
KINGDOM MONERA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The peptidoglycan of gram-negative bacteria is composed of lipids (fats), while gram-positive bacteria are composed of carbohydrates and proteins
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The peptidoglycan of gram negative bacteria is thicker than that of gram positive bacteria
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if it is dripped with gram stain, the peptidoglycan of gram positive bacteria will be red
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peptidoglycan of gram positive bacteria is thicker than gram negative bacteria
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if it is dripped with gram stain, the peptidoglycan of gram negative bacteria will turn purple
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Detailed explanation-1: -Gram-negative bacteria are surrounded by a thin peptidoglycan cell wall, which itself is surrounded by an outer membrane containing lipopolysaccharide. Gram-positive bacteria lack an outer membrane but are surrounded by layers of peptidoglycan many times thicker than is found in the Gram-negatives.
Detailed explanation-2: -A Gram stain is colored purple. When the stain combines with bacteria in a sample, the bacteria will either stay purple or turn pink or red. If the bacteria stays purple, they are Gram-positive. If the bacteria turns pink or red, they are Gram-negative.
Detailed explanation-3: -Gram staining is a technique that uses violet dye to distinguish between gram-positive and gram-negative bacteria. If the bacteria are gram-positive, the thick, peptidoglycan layer in their cell walls will retain the dye and they will stain violet.
Detailed explanation-4: -Gram positive bacteria have a thick peptidoglycan cell wall with a single internal plasma membrane. They do not contain LPS but they do contain teichoic and lipoteichoic acid. Gram negative bacteria have a thinner peptidoglycan cell wall with an outer membrane and an inner plasma membrane (dual membrane).