BIO 171 Module 4 Exam (Essential Microbiology) Questions and Answers 2023, Score 100%. Portage Learning
BIO 171 Module 4 Exam (Essential Microbiology) Questions and Answers 2023, Score 100%. Portage Learning. Differential media is best suited for distinguishing between two similar species of bacteria. True Correct! Growth media does not contain restrictive factors, while selective media is best used to encourage the growth of one microbe while simultaneously discouraging the growth of the other. Since two similar species of microbes are being studied they must be differentiated under similar but just slightly different conditions (differential media). False 6/20/22, 10:00 PM M4: Module 4 Exam - Requires Respondus LockDown Browser + Webcam: Essential Microbiology with Lab-2021-Dalbey 2/13 Question 2 2 / 2 pts A researcher is asked to determine which of two vials contains E coli and which contains salmonella. Knowing both are Gram-negative while only one of them is capable of fermenting lactose, which type of media would be best suited? Differential media Correct! Growth media Non-selective and non-differential media Selective media Question 3 10 / 10 pts Your Answer: What are the requirements of a fastidious microbe? They are organisms with abstract growth requirements and without these requirements, they are not able to grow. Medias that are rich however, contain these specific nutrients, which are essential and necessary for the growth of a certain subset of microorganisms. A fastidious microbe is an organism with complex growth requirements such that if absent it will not grow. Enriched medias thus contain these specific and essential nutrients required for the growth of a particular subset of microorganisms.
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