1. Define sterilization. Give an example of a method that can be used for sterilization. (+1 pt).  2. How is a bacteriostatic different from a bacteriocidal? (+1pt).  3. What is the difference between an antiseptic and a disinfectant? (+1pt).   4. What factors should be considered when you are choosing a disinfectant? Name 2. (+2pts) Extra credit opportunity: Give up to 3 additional factors (up to +3pts EC). 

________ are a diverse group of eukaryotic organisms that are similar in rRNA sequences, but quite different from each other in motility types and ecology. They have been used previously as a “catch-all” for organisms that couldn’t be easily classified into other groups.

Table 20.3The following data were obtained from a broth dilution test: Concentration of Antibiotic X Growth 2.0 μg/ml – 1.0 μg/ml – 0.5 μg/ml – 0.25 μg/ml + 0.125 μg/ml + 0 + Bacteria from the 0.25 μg/ml tube were transferred to new growth mediacontaining antibiotic X with the following results: Concentration of Antibiotic X Growth 2.0 μg/ml – 1.0 μg/ml + 0.5 μg/ml + 0.25μg/ml + The data in Table 20.3 show that these bacteria

Which of the following statements about drugs that competitively inhibit DNA polymerase or RNA polymerase is FALSE?

A drug that inhibits mitosis, such as griseofulvin, would be more effective against

Table 20.2The following results were obtained from a disk-diffusion test for microbial susceptibility to antibiotics. Staphylococcus aureus was the test organism. Antibiotic Zone of Inhibition A 3 mm B 7 mm C 0 mm D 10 mm In Table 20.2, the most effective antibiotic tested was

Which one of the following statements is a reason for NOT classifying viruses in one of the threedomains of life (Bacteria, Archaea, Eukarya) rather than in a fourth separate domain?

The antibiotic actinomycin D binds between adjacent G-C pairs, thus interfering with

Which of the following characterizes the Domain Bacteria?

1. Explain why scientific names are used. (+2pt) 2. Why can’t we use common names for organisms? Give one reason. (+1 pt) For extra credit, give up to 2 additional reasons. (up to 2pt EC) 3. Give an example of a scientific name (binomial nomenclature) and the organism’s common name. It can be any type of organism. (+2pt)