Microbiologists have learned how to isolate, cultivate, and characterize many di
ID: 146892 • Letter: M
Question
Microbiologists have learned how to isolate, cultivate, and characterize many different groups of bacteria Although there is no universal medium, microbiologist use what they know about specific groups to derive media formulations that fit their particular scientific goal. Knowledge of how media components are used to facilitate, or even hinder growth is a useful tool for studying microbes. Using the recipes on the next page fill out the table. Medium Nutrient Agar AIA APT+azide MacConkeys What components are these organisms using for an carbon source? What components are these organisms using for a nitrogen source? Is this medium considered selective If it is selective, what ingredient(s) is/are the selective agent? Is this a differential medium? If it is differential, what component (s) is/are helping differentiate microbes? Which groups may be cultivated on this medium? What would be a good source of inoculum for the group in the above row?Explanation / Answer
Medium Nutient Agar AIA APT+Azide MacConkey Carbon source Beef extract Glycerol casein enzymic hydrolysates Lactose monohydrate Nitrogen source Beef extract sodium caseinate casin enzymic hydrolysates peptone selective? yes yes yes yes