Videos
To analyze:
The tests that is necessary further to identify red colony producing bacteria on MacConkey agar.
Introduction:
MacConkey agar stands as a differential media of lactose and non-lactose fermenters by producing red colonies for the former and colourless colonies for the latter respectively. Further certain tests can be undergone to identify the organism.
Explanation of Solution
The gram negative rods that is oxidase-negative and that which ferments lactose can be subjected to check for the presence of Hydrogen sulphide production. If Hydrogen sulphide test is positive the bacterium can be a Citrobacter. If it is negative to Hydrogen sulphide test then Indole test can be performed. If it is positive to Indole test it is Escherichia and if it is negative mobility test can be done. If there is mobility then it can be Enterobacter and if there is no mobility then it is Klebsiella.
Thus the above tests can be performed to confirm the identity of the bacterium.
Want to see more full solutions like this?
Chapter 48 Solutions
Laboratory Experiments in Microbiology (11th Edition)
- Selection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forwardCompetition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forwardSpecies Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forward
- magine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forwardWhat is the difference between Uniporters, Symporters and Antiporters? Which of these are examples of active transport?arrow_forwardWhat are coupled transporters?arrow_forward
- How do histamine and prostaglandins help in the mobilization of leukocytes to an injury site? What are chemotactic factors? How do they affect inflammation process?arrow_forwardCompare and contrast neutrophils and macrophages. Describe two ways they are different and two ways they are similar.arrow_forwardDescribe the effects of three cytokines (not involved in the initial inflammation response). What cells release them?arrow_forward
