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How penicillin affect gram positive and gram negative cell?
Penicillin is an antibiotic that destroys Bacteria by destroying the cell wall of the microorganism. It does this by inactivating an enzyme necessary for the cross linking of bacterial cell walls. Cell wall construction than stops and the bacteria soon die.
How do protoplast differ from L form?
Protoplasts are formed from gram-positive cells in the presence of lysozyme, which destroys the cell wall. L forms are gram-positive or gram-negative bacteria that do not make a cell wall. Therefore, L forms never had or made a cell wall as opposed to protoplasts which used to have a cell wall, but no longer do because it was destroyed. Penicillin can be used to destroy the cell wall of a bacterial gram-positive cell and form a protoplast, but in the presence of Penicillin, if a new bacterial cell is forming and cannot create a cell wall, then it will become an L form.
What cell structure does penicillin target?
Cell Wall
Would penicillin be very effective against Mycoplasma?
No- because penicillin inhibits cell wall synthesis and Mycoplasmas don't have a cell wall.
What is penecillim made of?
Penicillin is made of of the Penicillium fungi which produces penicillin that causes cell wall destruction which in turn causes cell lysis.
What would happen if a suspension of bacteria is placed in a distilled water with penicillin?
eventually the bacteria would die because the penicillin would interfere with the ability to synthesize a cell wall thus the bacteria wouldn't divide. and the existing bacterial cell wall would lengthen and become frail. However, the bacteria must be gram-positive because they have cell walls composed of peptidoglycan, which is ideal for penicillin to attack.
Is fungi the presence or absence of a cell?
fungi is the presence of a cell
Why doesn't penicillin kill fungal disease?
Penicillin kills susceptible bacteria by interfering with the bacterial cell wall. Since fungi don't have a cell wall, penicillin can't eliminate fungal infection.
How does penicillin act as a bacterial killer?
Penicillin kills bacteria by interfering with the ability to synthesize cell wall.
What is spheroplast cells?
cell that has completely remove cell wall by action of penicillin
Will bacterial cells continue to grow normally in the presence of penicillin in an isotonic environment?
Yes
Why does penicillin kill only actively multipling cells and lysozyme will kill cells in any stage of growth?
Penicillin inhibits transpeptidase, and enzyme that is necessary for bacterial cell wall synthesis. If a cell is not actively multiplying, then no cell wall synthesis is occurring and, therefore, penicillin does not inhibit the bacteria.
