8 Questions
Which feature is characteristic of Gram-positive bacterial cell walls?
Presence of teichoic acids
What happens to Gram-negative bacteria when their cell walls are removed?
They become spheroplasts
Which type of bacterial cell wall contains complex lipids?
Acid-fast
Which component is absent in Gram-positive bacterial cell walls?
Outer membrane
During Gram staining, what color do Gram-negative bacteria appear after decolorization?
Red
What is the primary function of the cell envelope in bacteria?
Providing shape and rigidity
Which molecule acts as a mordant during the Gram-staining process?
Iodine
Which of the following bacteria are typical Gram-negative species?
Escherichia coli
Learn about the functions and types of bacterial cell envelopes and walls, including their composition and characteristics.
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