1. Which of the following examples specifically apply to binary fission (growth): A. an increase in the number of viruses in a glucose medium B. an increase in the rate of mitosis in Trichomonas vaginalis infections C. an increase in the population of Bifidus regularis, a mutualistic species D. a ten-fold (10X) increase in the size of an individual Streptococcus pyogenes cell E. none of the above examples apply to binary fission 2. A patient is prescribed Septra®, a sulfa antibiotic to treat a bacterial infection. Explain WHY the sulfa antibiotic kills the bacterial cells: A. the sulfa antibiotic blocks the binding of the true substrate and requires a high concentration B. the sulfa antibiotic causes denaturation of all proteins and requires a high concentration C. the sulfa antibiotic permanently binds to nucleic acids and requires a low concentration D. the sulfa antibiotic causes a permanent denaturation of the DHPS enzyme and requires a low concentration E. the sulfa antibiotic is a structural mimic of DNA nucleotides and requires a low concentration
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Therefore, the example that specifically applies to binary fission (growth) is: C. an increase in the population of Bifidus regularis, a mutualistic species Show more…
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Which of the following are types of viruses? Select all that apply. a. A phage b. A bacteriophage c. A prion d. A viroid. 2. Which of the following are steps of the viral lytic cycle? Select all that apply. a. Assembly b. Entry c. Integration/Replication d. Release e. Attachment 3. Which of the following causes the death of a host cell? Select all that apply. a. Temperate viruses b. Viral lysogenic cycles c. Viral lytic cycles 4. Which of the following statements is NOT true regarding binary fission in bacterial cells. a. Binary fission is a form of asexual reproduction. b. Binary fission is a form of horizontal gene transfer. c. Binary fission results in the production of two genetically identical daughter cells. 5. Which of the following causes disease without using nucleic acid? a. Viruses b. Viroids c. Prions
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Which of the following statements is FALSE? a. A bacterial growth curve should be plotted using the log10 scale. b. Cells are actively undergoing binary fission during the log phase of growth. c. A division septum forms once a prokaryotic cell has replicated its chromosome and reached about twice its original size. d. Binary fission is a form of replication commonly used by prokaryotes. e. Prokaryotic cells are able to replicate rapidly due to the shorter length of the G2 phase of their cell cycle. You decide to grow microbes on Tryptic Soy Agar that contains the following ingredients: Tryptone (Pancreatic Digest of Casein) 15.0 g. Soytone (Papaic Digest of Soybean Meal) 5.0 g. Sodium Chloride 5.0 g. Agar 15.0 g. Water up to 1 liter. What type of media is this? a. Selective. b. Differential. c. Complex. d. Chemically Defined. e. All of the above are correct.
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