BIOS-242 Week 1 Quiz: MCQs & Short Answer (Version 1)( 2022)

BIOS-242 Week 1 Quiz: MCQs & Short Answer (Version 1) 1. (TCO 1) Why are microorganisms so important to our ecosystems? They enrich soil. They degrade wastes. They support life. None of the above All of the above 2. (TCO 1) The scientific method consists of four basic steps. Which option below shows the correct sequence of events? Observe results, Generate hypothesis, Ask a question based upon observations, Conduct experiment Conduct experiment, Ask a question based upon observations, Generate hypothesis, Observe results Generate hypothesis, Conduct experiment, Observe results, Ask a question based upon observations Ask a question based upon observations, Generate hypothesis, Conduct experiment, Observe results None of the above orders are correct. 3. (TCO 1) Which of the following is a practical application of the use of Saccharomyces cerevisiae? To distill water To make yogurt To make beer To make flat bread To treat yeast infections 4. (TCO 1) Which of the following statement(s) is true of yeasts? They have cell walls. They reproduce by budding. They are used to make breads. They are used to make wine and brew beer. All of the above Instructor Explanation: Chapter 1, The Early Years of Microbiology section 5. (TCO 2) Which of the following is NOT an example of an archaea? BIOS-242 Week 1 Quiz: MCQs & Short Answer (Version 1) An organism isolated from the Dead Sea An organism producing methane in ocean sediments An organism found in deep-sea hydrothermal vents An organism isolated from hot springs An organism causing pneumonia in an elderly person Instructor Explanation: Chapter 11, Survey of Archaea section 6. (TCO 2) Which of the following statements about prokaryotic arrangement is TRUE? The palisade arrangement is common in the Streptococci species. Diplococci look like pairs of bacteria under the microscope. Staphyloccus species commonly form long chains of cocci. Prokaryotes that divide by binary fission are always found as single cells. A grapelike cluster of cells is known as a sarcina. Instructor Explanation: Chapter 11, General Characteristics of Prokaryotes section 7. (TCO 2) What is the potential overall magnification of a microscope that has a 10X ocular lens and a 40X objective lens? 10X 40X 390X 400X 410X Instructor Explanation: Chapter 4, Microscopy section 8. (TCO 2) Which unit of measurement is used to measure intracellular organelles and viruses? Centimeter Decimeter Micrometer