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Is syphilis gram positive or gram negative?
Syphilis is the name given to describe a disease that is believed to be caused by spirochetal bacterium Treponema Pallidum , it`s a gram negative bacteria
Results for: Gram-negative
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In Microbiology
Is gonorrhea a gram positive or gram negative?
Gonorrhea is a gram negative gonorrhea causing bacteria is gonococci which is gram negative. It is Gram-.
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How can you differentiate the gram positive and gram negative?
Answer search Gram's stain - its the No1 differential stain.
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Is influenza gram positive or gram negative?
Answer Neither - the influenza VIRUS is not typed by gram stains - only bacteria are.
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In Biology
What does gram positive and gram negative mean?
Gram positive and gram negative is one way of classifying a bacteria. Gram positive bacterias have a cell wall which will stain in violet color. Gram negative bacterias, how…ever, have an extra layer of cell wall around them which prevents the cell wall from being dyed. These gram negative bacterias will need an additional stain called safranin to make the bacterias redish, or pink color. Also Gram positive bacterias have a higher amount of RNA than gram negative baterias. This could be because indirectly peptidoglycan is a protein and the higher amount of protein production means a higher amount of RNA production. there is only difference in gram positive and negative is of cell wall as : The Gram positive cell wall The Gram positive cell wall is characterised by the presence of a very thick peptidoglycan layer, which is responsible for the retention of the crystal violet dyes during the Gram staining procedure. It is found exclusively in organisms belonging to the Actinobacteria (or high %G+C Gram positive organisms) and the Firmicutes (or low %G+C Gram positive organisms). Bacteria within the Deinococcus-Thermus group may also exhibit Gram positive staining behaviour but contain some cell wall structures typical of Gram negative organisms. Imbedded in the Gram positive cell wall are polyalcohols called teichoic acids, some of which are lipid-linked to form lipoteichoic acids. Because lipoteichoic acids are covalently linked to lipids within the cytoplasmic membrane they are responsible for linking the peptidoglycan to the cytoplasmic membrane. Teichoic acids give the Gram positive cell wall an overall negative charge due to the presence of phosphodiester bonds between teichoic acid monomers. The Gram negative cell wall Unlike the Gram positive cell wall, the Gram negative cell wall contains a thin peptidoglycan layer adjacent to the cytoplasmic membrane, which is responsible for the cell wall's inability to retain the crystal violet stain upon decolourisation with ethanol during Gram staining. In addition to the peptidoglycan layer the Gram negative cell wall also contains an additional outer membrane composed by phospholipids and lipopolysaccharides which face into the external environment. The highly charged nature of lipopolysaccharides confer an overall negative charge to the Gram negative cell wall. The chemical structure of the outer membrane lipopolysaccharides is often unique to specific bacterial strains (i.e. sub-species) and is responsible for many of the antigenic properties of these strains. As a phospholipid bilayer, the lipid portion of the outer membrane is largely impermeable to all charged molecules. However, channels called porins are present in the outer membrane that allow for passive transport of many ions, sugars and amino acids across the outer membrane. These molecules are therefore present in the periplasm, the region between the plasma membrane and outer membrane. The periplasm contains the peptidoglycan layer and many proteins responsible for substrate binding or hydrolysis and reception of extracellular signals. The periplasm is thought to exist as a gel-like state rather than a liquid due to the high concentration of proteins and peptidoglycan found within it. Because of its location between the cytoplasmic and outer membranes, signals received and substrates bound are available to be transported across the cytoplasmic membrane using transport and signalling proteins imbedded there. (MORE)
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The difference of gram positive and gram negative?
there is only difference in gram positive and negative is of cell wall as : The Gram positive cell wall The Gram positive cell wall is characterised by the presence of a ver…y thick peptidoglycan layer, which is responsible for the retention of the crystal violet dyes during the Gram staining procedure. It is found exclusively in organisms belonging to the Actinobacteria (or high %G+C Gram positive organisms) and the Firmicutes (or low %G+C Gram positive organisms). Bacteria within the Deinococcus-Thermus group may also exhibit Gram positive staining behaviour but contain some cell wall structures typical of Gram negative organisms. Imbedded in the Gram positive cell wall are polyalcohols called teichoic acids, some of which are lipid-linked to form lipoteichoic acids. Because lipoteichoic acids are covalently linked to lipids within the cytoplasmic membrane they are responsible for linking the peptidoglycan to the cytoplasmic membrane. Teichoic acids give the Gram positive cell wall an overall negative charge due to the presence of phosphodiester bonds between teichoic acid monomers. The Gram negative cell wall Unlike the Gram positive cell wall, the Gram negative cell wall contains a thin peptidoglycan layer adjacent to the cytoplasmic membrane, which is responsible for the cell wall's inability to retain the crystal violet stain upon decolourisation with ethanol during Gram staining. In addition to the peptidoglycan layer the Gram negative cell wall also contains an additional outer membrane composed by phospholipids and lipopolysaccharides which face into the external environment. The highly charged nature of lipopolysaccharides confer an overall negative charge to the Gram negative cell wall. The chemical structure of the outer membrane lipopolysaccharides is often unique to specific bacterial strains (i.e. sub-species) and is responsible for many of the antigenic properties of these strains. As a phospholipid bilayer, the lipid portion of the outer membrane is largely impermeable to all charged molecules. However, channels called porins are present in the outer membrane that allow for passive transport of many ions, sugars and amino acids across the outer membrane. These molecules are therefore present in the periplasm, the region between the plasma membrane and outer membrane. The periplasm contains the peptidoglycan layer and many proteins responsible for substrate binding or hydrolysis and reception of extracellular signals. The periplasm is thought to exist as a gel-like state rather than a liquid due to the high concentration of proteins and peptidoglycan found within it. Because of its location between the cytoplasmic and outer membranes, signals received and substrates bound are available to be transported across the cytoplasmic membrane using transport and signalling proteins imbedded there. (MORE)
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In Microbiology
Gram positive and gram negative bacteria?
CHARACTERISTICS OF GRAM POSITIVE AND GRAM NEGATIVE**** GRAM POSITIVE BACTERIA: 1. A very thick cell wall of peptidoglycan 2. If a flagellum is present it contain two rings fo…r support 3. Teichoic acid are present 4. Lipopolysaccharide is absent 5. Do not sensitive to penicillin 6. Digested by lysozyme 7. protein content 0 % 8. lipid and lipoprotein content 0-3 % 9. Gram positive bacteria stain purple. GRAM NEGATIVE BACTERIA: 1. A very thin layer of peptidoglycan 2. Teichoic acid are absent 3. Lipopolysaccharide is present (outside the polysacchride) 4. Weakly sensitive to penicillin 5. Weakly Digested by lysozyme 6. protein content 9% 7. lipid and lipoprotein content 58% 8. Gram negative bacteria stain pink. ****************THANK YOU**************** "NEELAM KHAN" Jinnah university for women Karachi, Pakistan. (MORE)
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In Uncategorized
What is better the you phone 5c or 5s?
the 5s because it has better service but it dosent have diffrent colrs just silver gold and black
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In Microbiology
Do gram negative bacteria get a negative stain?
No, the Gram stain is a differential stain which classifies bacteria as either gram-positive or gram negative. The cell is first stained with a primary stain such as crystal… violet.All bacteria are stained purple by this basic dye. after that a mordant(Grams iodine) is applied. Next a decolorizing agent (ethanol or ethanol-acetone)is applied. The primary stain is washed out(decolorized) of some bacteria(Gram -Neg),whereas others are unaffected(Gram-Pos).A secondary or counterstain such as safranin is applied, this stains the gram- neg bacteria red. The cells that decolorize easily are gram negative, those that hold the primary stain are gram positive. Negative staining is used to show better morphology(shape) and size of cells, as well as being used in hard to stain bacteria such as coccobacilli. (MORE)
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What is the answer to 20c plus 5 equals 5c plus 65?
20c + 5 = 5c + 65 Divide through by 5: 4c + 1 = c + 13 Subtract c from both sides: 3c + 1 = 13 Subtract 1 from both sides: 3c = 12 Divide both sides by 3: c = 4