Essays Tagged: "gram negative"

Gram Staining to Distinguish Between Different Types of Bacteria

It/'s a practical Good and to the point.Gram Staining to Distinguish Between Different Types of BacteriaIntroductionBacteria fall into two n ... Bacteria fall into two natural groups according to their cell wall structure. Some are stained with Gram's stain and are termed Gram positive, others do not retain the stain during the decolourising p ... med Gram positive, others do not retain the stain during the decolourising procedure and are termed Gram negative.AimTo test whether B. subtilis and A. tumefaciens are Gram positive or Gram negative u ...

(2 pages) 50 0 5.0 Jan/1995

Subjects: Science Essays > Biology

Escherichia coli

name has come to describe all similar bacteria as "coliform" or coli-like.These enterobacteria are gram-negative, nonspore-forming straight rods, aerobic and facultative anaerobes, ranging from 1 to ...

(4 pages) 96 0 2.7 Apr/1996

Subjects: Science Essays > Biology

The Molecular Virulence of Legionnaires' Disease Bacterium.

ic effect on the host cell surface (Husmann and Johnson, 1994). These bacteria are characterised as gram negative, aerobic rods (Fields, 1997) and possess a single flagellum with a 47kDa filament subu ...

(12 pages) 96 1 5.0 Jan/2004

Subjects: Science Essays > Microbiology

Essay on bacterial cell wall composition

sis 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 t ... e peptidoglycan of the cell wall.The number of layers in the peptidoglycan differs strongly between Gram+ and Gram- (and Acid-Fast) cell walls.Think Positive: The Gram-Positive Cell WallGram+ cell wal ...

(5 pages) 57 0 4.3 Feb/2004

Subjects: Science Essays > Biology

Microbiological testing for unknown (salmonella sp.)

, I decided to do a number of stains from the colony growth. First stain that was conducted was the Gram stain, which determined that the unknown was Gram negative with rods (Fig.2). A gram stain of t ...

(2 pages) 69 0 4.3 Apr/2004

Subjects: Science Essays > Microbiology

Donovanosis: An STD With a Cause...

se is usually ulcerative.Interestingly, Donovanosis is caused by Calymmatobacterium granulomatis, a gram-negative pleomorphic bacillus. The bacterium is rod shaped.Donovanosis is mostly transmitted th ...

(2 pages) 27 0 1.5 Jan/2005

Subjects: Humanities Essays > Health & Medicine > Diseases