Essays Tagged: "Gram"

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

Administering different antibiotics to Streptococcus salivarius will prohibit growth at different rates.

synthesis of the intact peptidoglycans, this causes the wall to collapse and the cell then breaks. Gram positive bacteria have thicker cell walls and more peptidoglycans so therefore, they're more su ... hicker cell walls and more peptidoglycans so therefore, they're more susceptible to Penicillin than Gram negative bacteria. Humans do not have peptidoglycans so Penicillin has very little toxicity for ...

(5 pages) 43 0 3.7 Jan/2004

Subjects: Science Essays > Biology

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


hat affect us in a direct and negative way. Bacteria are commonly divided into two distinct groups: Gram positive and Gram negative bacteria. The gram reaction of a bacterial species has to do with th ... ic microbe. There are two possible types of cell wall that a bacterium may posses depending on its' Gram reaction.Gram negative bacteria have two cell membranes sandwiching a thin layer of peptidoglyc ...

(12 pages) 52 0 0.0 Aug/2001

Subjects: Science Essays > Biology

Moles Of Iron And Copper Formal Lab

: 1. Put on your laboratory apron and safety goggles. Use a 100-mL beaker to make a solution with 2 grams of copper(II) chloride and 15-mL of distilled water.2. Use a stirring rod to make sure all of ... up all materials and wash hands thoroughly.Data: -Mass of the nail before put into solution = 2.87 grams.-Mass of the nail after the copper chloride solution = 2.21 grams of Iron. Difference of = .66 ...

(3 pages) 13 1 4.6 Jan/2002

Subjects: Science Essays > Chemistry


n= 3.226 x 10-3 mol. H2 n= 3.422 x 10-3 mol. H2 TABLE III: CALCULATION OF GRAMS AND MOLE OF MAGNESIUM CONSUMED DURING EACH TRIAL BALANCED EQUATION: Mg + 2HCl → MgCl2 + H ... / 1mol H2) (24.3050 g/mol-1/ 1mol Mg) = 0.077g Mg Consumed (4 significant figures) Convert mass in grams to moles: 0.077g Mg (1mol. Mg / 24.3050 g/mol-1) = 3.168 x 10-3 mol. Mg (4 significant figures ...

(4 pages) 9 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Bacteria and Gram-Staining

to move around by "whipping" itself about in a rotating motion. (Postlethwait and Hopson, 2009)The Gram stain technique separates the bacteria into one of two groups based on their cell wall structur ... ates the bacteria into one of two groups based on their cell wall structure. Bacteria may be either Gram-positive or Gram-negative. Gram-positive bacteria have simpler cell walls and more peptidoglyca ...

(5 pages) 0 0 0.0 Mar/2013

Subjects: Businesss Research Papers

Unknown Lab Report

n. Materials and Methods The professor gave out the unknown specimens. It contained one-­‐gram positive and one-­‐gram negative bacteria from the given list. I was assigned unknown ... ive because the bacteria need to be separated and isolated before they can be identified. Moreover, gram staining was used to understand the basic morphology of these bacteria. As these plates were in ...

(4 pages) 2 0 0.0 Nov/2014

Subjects: Science Essays > Biology