BIOL107 Lecture 6: Bio 107 Lecture 6 Cell Walls

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL107
• Professor: Martin Srayko

Document Summary

The cell membrane is a fluid barrier that separates cell interior from the exterior, but is not very strong: cells typically have additional structures that reinforce the membrane. Provide shape and protection from bursting in hypotonic environments. Bacterial cells, like animal cells, contain a much higher concentration of many molecules, compared with their environment. Almost all bacterial cell walls contain peptidoglycan. Most bacteria belong to one of two major classes, as defined by their cell wall structure: the two types are distinguished by the gram stain a procedure developed by. He was trying to find a better way to see the bacteria with the microscope (most have no colour, and are often transparent. Discovered that some bacteria stained more intensely than others (the colours come from a combination of different stains used) Peptidoglycan is a polymer of nag and nam.