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Lecture notes

Bacterial Cell Envelopes and Cell Walls

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2024/2025 Written for academic year
Institution University Of Portsmouth (UoP)
Module Cells to Systems (M22177)
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PDF containing notes from the Bacterial Cell Envelopes and Cell walls lecture from module Cells to Systems.

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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

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David rusling
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