💊
Bacterial Cell Envelopes and Cell
Walls
Created @January 22, 2025 4:29 PM
Class Microbiology
LO:
Describe a bacterial cell envelope
Define 3 classes of bacterial cell walls
Compare and contrast the composition of Gram-positive and Gram-negative
cell walls
Discuss the steps in a Gram stain and their role in differentiation
Explain the result of removing bacterial cell walls
Cell Envelopes
Provide
Protection from osmotic lysis (Cell bursting due to water entering)
Protection from body I.S
Shape and structure
Semi-permeable barrier
Can be 1/3 weight of bacterium
Prokaryotic C. Envelope
Membrane complex and related macromolecules creating a layer
separating the inside and outside of the cell
Bacterial Cell Envelopes and Cell Walls 1
Bacterial Cell Envelopes and Cell
Walls
Created @January 22, 2025 4:29 PM
Class Microbiology
LO:
Describe a bacterial cell envelope
Define 3 classes of bacterial cell walls
Compare and contrast the composition of Gram-positive and Gram-negative
cell walls
Discuss the steps in a Gram stain and their role in differentiation
Explain the result of removing bacterial cell walls
Cell Envelopes
Provide
Protection from osmotic lysis (Cell bursting due to water entering)
Protection from body I.S
Shape and structure
Semi-permeable barrier
Can be 1/3 weight of bacterium
Prokaryotic C. Envelope
Membrane complex and related macromolecules creating a layer
separating the inside and outside of the cell
Bacterial Cell Envelopes and Cell Walls 1