Without fully explaining how the penicillin antibitic works: yes, archaea are resistant to penicillin. This is because they don't have peptidoglycan in their cell wall. Penicillin works by lowering the newly formed peptidoglycan in multiplying bacteria. It also does other things. The reason it works (this is natural penicillin G) only on Gr+ is because the can't get through the GR- cell wall. (I say this because both + and - HAVE peptidoglycan in their cell wall)
Archaeal cell wall chemistry is different from that of bacteria
- Lacks muramic acid and D-amino acids and therefore is resistant to lysozyme and b-lactam antibiotics
See the related link below.
survive exposure to penicillin
It is usually called MRSA: Methicillin-Resistant Staphylococcus Aureus. Methycillin is a version of penicillin that was developed to attack penicillin-resistant bacteria. MRSA can sometimes be treated with other common antibiotics like tetracyclines, e.g. doxycycline.
Peptidoglycan in Gram-negative bacteria is inaccessible to penicillins because penicillin cannot penetrate the Gram-negative outer membrane.
No penicillin is most effective against gram-positive bacteria.
Archaea
archaea is one of the 3 domains which is an evolutionary branch from bacteria which survive in extreme conditions, and therefore have intersting properties eg. heat resistant enzmyes
Methicillin
survive exposure to penicillin
penicillinase
Punctuated equilibrium
Punctuated equilibrium
1. members of the original population of bacteria that were penicillin resistant survived and reproduced, creating a more resistant populationReasonsome members of the of the original staphylococcus population had a mutation that made them penicillin- resistant. they survived and reproduced and all their offspring were also resistant to penicillin, creating a more resistant population
its smaLL
Because its bigger and bigger is better ;)
It is usually called MRSA: Methicillin-Resistant Staphylococcus Aureus. Methycillin is a version of penicillin that was developed to attack penicillin-resistant bacteria. MRSA can sometimes be treated with other common antibiotics like tetracyclines, e.g. doxycycline.
It helps to kill bacteria. Therfore, it can treat many diseases. Although in modern time, bacteria are becoming resistant to antibiotics and penicillin is losing its effects.
No. TB is commonly resistant to numerous antibiotics. It's generally treated with a cocktail of antibiotics, none are Penicillin.