Essay on bacterial cell wall composition
Title: Essay on bacterial cell wall composition
Category: /Science & Technology/Biology
Details: Words: 1405 | Pages: 5 (approximately 235 words/page)
Essay on bacterial cell wall composition
Category: /Science & Technology/Biology
Details: Words: 1405 | Pages: 5 (approximately 235 words/page)
Bacterial Cell Wall Composition
Almost all bacteria have cell walls surrounding the cell membranes. This cell wall helps to do important functions, like confer cell shape, and protect the cell from lysis when in low solute environments. There are three classifications used in describing cell walls: Gram Positive (Gram+), Gram Negative (Gram-) and Acid-Fast. These membranes share a common part in their structure, however--an interlocked layer of peptidoglycan. Peptidoglycan is a molecular complex made from
showed first 75 words of 1405 total
You are viewing only a small portion of the paper.
Please login or register to access the full copy.
Please login or register to access the full copy.
showed last 75 words of 1405 total
is the most critical and also the one most affected by technical variations in timing and reagents.
4.Flood with safranin (pink color) - 10 seconds. (Wash with water). Air dry, or blot with absorbent paper.
Results
As shown below, organisms that retain the violet-iodine complexes after washing in ethanol stain purple and are termed Gram-positive, those that lose this complex stain red from the safranin counterstain are termed Gram-negative.
Typical Gram stain
Gram positive Gram negative