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What is depletion layer?
a layer that is present b/w the positive and negative charge
Why are Gram-positive bacteria more susceptible to the effects of penicillin than Gram-negative bacteria?
Penicillins have a bacteriocidal effect on Gram-positive bacteria. In Gram-positive cells, peptidoglycan makes up as much as 90% of the thick, compact cell wall, and is the outermost layer. Penicillins are not effective against Gram-negative bacteria, which have cell walls in which peptidoglycan is not the outermost layer, but that lies between the plasma membrane and a lipopolysaccharide (LPS) outer membrane. Penicillin cannot access the peptidoglycan of Gram-negative cells.
What describes a difference when gram-positive bacteria are compared to gram negative bacteria?
The peptidoglycan layer of the cell wall is thicker for a Gram-positive bacterium.
What describes a difference. When gram-positive bacteria are compared to gram-negative bacteria?
The peptidoglycan layer of the cell wall is thicker for a Gram-positive bacterium.
Why might there be a differential effect of an antibiotic between a gram positive and gram negative bacterium?
Because of the lipopolysaccaride outer layer of Gram-negative bacteria and the porins that form water-filled channels across this layer.
Is S epidermidis gram negative or gram positive?
S. epidermidis is a Gram-positive bacterium. It appears purple when subjected to a Gram stain due to its thick peptidoglycan layer in the cell wall.
Construct a Venn diagram to illustrate the similarities and differences between gram positive gram negative cells?
Not really possible to make a venn diagram, but here's a list: Similarities: In Bacteria Involve a peptidoglycan layer Differences Gram-negative is much more toxic Gram-negative is crystal violet in the Gram stain while Gram-positive is red
What is the difference between negative and positive plane in pcb design?
A positive plane is just like any other artwork layer - it shows where copper will be. A negative plane, like the name suggests, shows where there will not be copper.
What layer in the atmosphere is magnetic?
The ionosphere inside the atmosphere is magnetic. It is the one that contains the ions i.e positive and negative.
What are the key differences between gram-negative and gram-positive bacteria?
Gram-negative bacteria have a thin peptidoglycan layer in their cell wall and an outer membrane, while gram-positive bacteria have a thick peptidoglycan layer but lack an outer membrane. Gram-negative bacteria also have lipopolysaccharides in their outer membrane, which gram-positive bacteria do not have. Additionally, gram-negative bacteria are typically more resistant to antibiotics due to the presence of the outer membrane.
Is penicillin more effective against Gram negative or Gram positive?
Penicillin is more effective against Gram positive bacteria. This is because the peptidoglycan layer of Gram negative bacteria acts as a barrier that makes them less susceptible to penicillin.
What cell structures is significantly different between Gram positive and Gram-negative bacteria?
The difference between a gram positive and gram negative bacteria is the thickness/presence of the peptidoglycan layer secreted on the outside of the plasma membrane
