COPY: Mikrobiologie: Katalase-Test und Antibiotika

A positive result in a catalase test is indicated by the formation of bubbles, not a blue coloration.

Cefuroxim is a cephalosporin antibiotic, not a lincosamide. Lincosamides include clindamycin and lincomycin.

DNA is more resistant to environmental degradation than RNA due to its double-stranded structure and the presence of thymine instead of uracil.

Pneumoccocus is sensitive to optochin, a chemical that inhibits its growth.

Sterilisation completely eliminates all viable microorganisms, rendering a material free from any living organisms that can multiply.

The 'Ammenphänomen' describes how Haemophilus influenzae can grow in the beta-hemolysis zone created by Staphylococcus aureus due to the release of NAD and hemin by the latter.

E. coli serotypes are classified using specific antigenic factors, not the 'Bunte Reihe' (which is a system for identifying Haemophilus influenzae).

The current recommendation by the Robert Koch Institute includes vaccination against Corynebacterium diphtheriae, a bacterium causing diphtheria.

Teichoic acids are a significant component of the cell wall of Gram-positive bacteria.

Clostridium tetani causes tetanus, a disease characterized by muscle spasms, not diarrhoea.

Some anaerobic bacteria can tolerate the presence of oxygen, these are called aerotolerant anaerobic bacteria.

Rifampicin is primarily effective against Mycobacterium tuberculosis. It has limited activity against Gram-negative bacteria.

Infection is characterized by the presence of microorganisms that cause symptoms, it is not simply colonization without any symptoms.

Semmelweis's observations led him to conclude that the spread of puerperal fever (childbed fever) was due to the transmission of infections from cadavers to mothers by medical professionals, highlighting the critical need for hand hygiene.

Streptococcus pyogenes, a bacterial species responsible for various infections, possesses the C-polysaccharide antigen of group A.

Surgical hand disinfection aims to reduce the number of potential pathogens on the hands to a level where they no longer pose a significant risk of infection.

Clinical isolates of Staphylococcus aureus are typically resistant to beta-lactam antibiotics due to their production of beta-lactamases, which break down these antibiotics.

Bacteria are prokaryotes and lack a nucleus, instead having a nucleoid region. This is a defining characteristic of prokaryotic cells.

Makrolides, a class of antibiotics, are known to inhibit protein synthesis, not cell wall synthesis.

Cryptococcus neoformans is not the most prevalent fungal pathogen in humans. Candida species are generally more common.