Streptococcus cannot grow on MSA plates because MSA is a selective and differential media. It is selective because only certain microorganisms can grow on it due to its high NaCl content, in which this concentration - near 10% in MSA - has an inhibitory effect on most bacteria, such as Streptococci.
yesTypically, MSA is used to isolate and differentiate various staphylcocci, some of which are pathogenic, like S. aureus, or non pathogenic like S. epidermidis. Staph are the only kind of bacteria that will grow on MSA. S. aureus is the only staph that ferments manitol. Meaning, MSA can be used to isolate pathogenic from non-pathogenic staph.source: biology major
yes It can, because MSA grows gram positive bacteria.
coagulase
yes
catalase
Yes. S. epidermidis is a bacterial species found commonly on the skin as a part of a human's natural bioflora. Sweating releases salt and causes the surface of our skin to be very salty, providing an environment in which many bacteria would normally perish. S. epidermidis, however, prefers such an environment and thus it is also able to grow regularly when cultured on Mannitol Salt Agar plates.
yesTypically, MSA is used to isolate and differentiate various staphylcocci, some of which are pathogenic, like S. aureus, or non pathogenic like S. epidermidis. Staph are the only kind of bacteria that will grow on MSA. S. aureus is the only staph that ferments manitol. Meaning, MSA can be used to isolate pathogenic from non-pathogenic staph.source: biology major
Yes micrococcus luteus, along with micrococcus roseus both grow on MSA. But, they do not fermente on this agar giving a negative test. However, Staphylococcus aureus grows on MSA and fermentes giving a positive test. *Side note* MSA plate is used to test for G+ coccus. The plate contains salt and salt "loving" bacteria will grow and show yellow colony, example of S. aureus.
yes It can, because MSA grows gram positive bacteria.
gram positive..
Metabolic tests such as an oxidase test can be used to differentiate S epidermidis and E faecalis. Such a test can be conducted by adding H2O2 to the colony. The result for S aureus will be negative and the result for S epidermidis will be positive.
the bacteria dont ferment in MSA, there is no growth on the plat
coagulase
MSA stands for mannitol salt agar. Streptococcus can not grow on this type of agar. This is because it has a very high salt content, which allows only certain microorganisms to grow in it.
No it doesn't.
yes
catalase