BIOCHEMICAL TESTS I
MacConkey agar is a selective and differential media used for the isolation and differentiation of ?
non-fastidious Gram-negative rods, particularly members of the family Enterobacteriaceae and the genus Pseudomonas.
Mannitol salt agar (MSA) is both a selective and differential medium used in the isolation of?
Staphylococci. It contains 7.5% sodium chloride (NaCl) and thus selects for Staphylococci which cantolerate the osmotic pressure created by high salt concentration
The catalase test facilitates the detection of the enzyme catalase in bacteria. It is essential for differentiating?
catalase-positive Micrococcaceae from catalase-negative Streptococcaceae. Some have reported its value in the presumptive differentiation among certain Enterobacteriaceae.
The catalase testis also valuable in differentiating?
aerobic (such as Bacillus) and obligate anaerobic bacteria (such as Clostridium), as anaerobes are generally known to lack the enzyme.
The catalase enzyme serves to neutralize the bactericidal effects of hydrogen peroxide. Catalase expedites the breakdown of hydrogenperoxide (H2O2) into?
water and oxygen (2H2O2 + Catalase → 2H2O + O2). This reaction is evident by therapid formation of bubbles.
The oxidase test is a biochemical reaction that assays for the presence of?
cytochrome c oxidase, an enzyme sometimes called indophenol oxidase.
What does SIM deep mean?
Sulfur Indole Motility deeps
What does o-f mean?