Communication Staphylococcal Alpha Hemolysin Can Form

Instructions and help about Communication Staphylococcal alpha Hemolysin Can Form

Staphylococcus aureus, sometimes called staph aureus, is coccal, or round-shaped, and grows in clusters. In fact, its name, broken down, means “golden cluster of grapes”. It sorta starts making sense if you look at it under a microscope - it tends to grow in sticky clusters, and it stains purple when Gram-stained due to its peptidoglycan cell wall, so it’s Gram positive and it resembles grapes. As for its “golden” color, when it’s grown on blood agar plates, the colonies have a distinctive golden-yellow color. Staphylococcus aureus are Gram positive and facultative anaerobes, meaning that they can survive in aerobic and anaerobic environments. They’re non-motile and don’t form spores. Staphylococci produce an enzyme called catalase which converts hydrogen peroxide to water and oxygen. Other common cocci, such as streptococci and enterococci, are catalase negative so they don’t have this ability and we can use a few drops of hydrogen peroxide to differentiate them. Cat