M4: Module 4 Exam- Requires Respondus LockDown Browser: Essential Microbiology with Lab- Straley.pdf

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BIOD 171 Quizzes M4: Module 4 Exam- Requires Respondus LockDown Browser ! M4: Module 4 Exam- Requires Respondus LockDown Browser Due No due date Points 100 Ques ! ons 24 Time Limit 60 Minutes Requires Respondus LockDown Browser This quiz is currently locked. A ! empt History A " empt Time Score LATEST A ! empt 1 59 minutes 89 out of 100 Score for this quiz: 89 out of 100 Submi ! ed Dec 9, 2020 at 1:52pm This a ! empt took 59 minutes. 2 / 2 pts Ques ! on 1 True or False: Di ff eren # al media is best suited for dis # nguishing between two similar species of bacteria. True Correct! Correct! Growth media does not contain restric # ve factors, while selec # ve 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 di ff eren # ated under similar but just slightly di ff erent condi # ons (di ff eren # al media). False 2 / 2 pts Ques ! on 2 A researcher is asked to determine if a sample contains Neisseria meningi ! des . Knowing Neisseria meningi ! des is slow growing and other foreign microbes may also be present in the culture, which type of media would be best suited? Selec # ve media Correct! Correct! Selec # ve media. If addi # onal foreign microbes may be present in your sample and you know Neisseria meningi # des is slow growing, you must restrict the unwanted microbes while suppor # ng the growth of Neisseria meningi # des. Thus, you are selec # vely encouraging one microbes growth, while selec # vely restric # ng others. Selec # ve and Di ff eren # al media Di ff eren # al media Growth media Your Answer: 10 / 10 pts Ques ! on 3 What are the requirements of a fas # dious microbe? Essen # al nutrients for the growth of the microorganisms, they are organisms with abstract growth requirements, without these requirements they will not grow. Enriched Medias contains the specific and essen # al nutrients required for the growth of the subset of these microorganisms. Medias can be any combina # on of selec # ve, di ff eren # al and enriched. A fas ! dious microbe is an organism with complex growth requirements such that if absent it will not grow. Enriched medias thus contain these specific and essen ! al nutrients required for the growth of a par ! cular subset of microorganisms. 2 / 2 pts Ques ! on 4 True or False: LB agar is classified as a selec # ve, non-di ff eren # al media. True False Correct! Correct! LB agar is the most basic type of agar and like LB media supports the growth of virtually all microbes without restric # on. Your Answer: 5 / 5 pts Ques ! on 5 The polysaccharide-based hardening agent added to LB media to produce LB agar is derived from what?

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