BIO 171 Module 4 Exam with Answers- Portage Learning

BIO 171 Module 4 Exam with Answers- Portage Learning (ASSURED A) 100% CORRECT GRADED A+ | LATEST SOLUTIONS | 1. True or False: Differential media is best suited for distinguishing between two similar species ofbacteria. True. Growth media does not contain restrictive factors, while selective media is best used toencourage 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). 2. A researcher is asked to determine if a sample contains Neisseria meningitides. Knowing Neisseria meningitides is slow growing and other foreign microbes may also be present in theculture, which type of media would be best suited: A. Growth media B. Differential media C. Selective media D. Selective and Differential media C. Selective media. If additional foreign microbes may be present in your sample and you know Neisseria meningitides is slow growing, you must restrict the unwanted microbes whilesupporting the growth of Neisseria meningitides. Thus, you are selectively encouraging one microbes growth, while selectively restricting others. 1. True or False: LB agar is classified as a selective, non-differential media. False. LB agar is the most basic type of agar and like LB media supports the growth ofvirtually all microbes without restriction. 2. What is agar used for in microbiology? 1. Alpha hemolysis B A. No hemolytic activity 2. Beta hemolysis C B. Incomplete hemolytic activity 3. Gamma hemolysis A