13. A pure oulture A. is sherino; B. is a population of identicat celts. C. is made of a cleaty defined chemical medium: O. eantains one mierabial ceif. 74. The theory of apontaneous generation was refuted by the work of A. Lows Piesteur: 0. Robert Koch; C. Robart Hooke. D. Antoni van Loeewentoek. 15. Transparent double-sided dishes used for growing microbes are most commonly called A. Petri dishes; B. boker dishos, C. sterilization plates; D. eulhure medium plates. 16. A microbial cells membrane is considered because its internal constituents are maintained within the cell. However, it also imports and exports other molecules in response to its environment. A. differential: B. microselective; C. nigid: D. semipemeable. 17. Which of the following statements is TRUE? A. Fimbriae are generally longer and less numerous than flagella. B. Fimbriae are involved in genetic exchange between celis. C. Hami are common in Bacteria but not found in Archaea. D. Fimbriae are usually shorter than flagella, whereas pili are involved in genetic exchange. In whathwich domain(s) of life is/are microorganisms represented? A. Archaea B. Bacterla C. Eukarya D. Archaea, Bacteria, and Eukarya.