BIOD 171 EXAM MODULE 4

True or False: Growth media is best suited for distinguishing between two similar species of bacteria. False. Growth media is designed to simply support (and not restrict) microbial growth. 2. 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: BIOD 171 EXAM MODULE 41. 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? Agar is used to create a solid, smooth surface on which microbes can grow. 1. Match the following hemolytic class with its description of activity. Exam Page 2 Answer Key Exam Page 3 Answer Key 1. Alpha hemolysis B A. No hemolytic activity 2. Beta hemolysis C B. Incomplete hemolytic activity A. Growth media B. Differential media C. Selective media D. Selective and Differential media B. Differential media distinguishes between two, often related, microbes.