When grown on nutrient agar, Staphylococcus aureus are best described as: Group of answer choices Smooth red colonies Rhizoid white colonies Round pale yellow colonies Filamentous cream colonies

A culture medium containing salt and mannitol on which only gram positive organisms grow and a yellow halo surrounds Staphylococcus aureus is called a(n)Group of answer choicesSelective mediumEnrichment mediumselective and differential mediaselective and enriched mediaDifferential medium

Although Staphylococcus aureus can grow at 7% NaCl, it grows best at NaCl levels less than 1%. This organism is a __________.ANSWERhalophilemesophileneutralophilefacultative halophile

The bacteria Streptomyces ________________________Group of answer choicesproduce a number of diseases.resemble algae in their pattern of growth.produce a characteristic blue green pigment.produce a number of antibiotics.form endospores.

n the name Staphylococcus aureus, aureus is theGroup of answer choiceskingdom.family name.genus.domain name.specific name.Next

Experiment 1.2: Human Microbiota Examine the mannitol salt agar and nutrient agar plates. Record the colony types and any changes to the agar. In particular, look for the presence of bright yellow colonies from the nasopharyngeal swab. This indicates that you may be a carrier of S. aureus (don't worry this is not unusual). Record your results and observations in the following table (see Appendix 1, pages 52, 53): Area (media) Colony types and morphologies Skin: forearms (mannitol salt agar) Skin: forehead (mannitol salt agar) Nasal cavity (mannitol salt agar) Throat (blood agar) Teeth (nutrient agar)