BIO 250 Exam 1 Test Prep Questions and Answers 2022 | Graded A

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Page path  BIO250_Saylor_V5  Unit 3: Tools of the Laboratory Started on Monday, August 20, 2018, 6:16 AM State Finished Completed on Monday, August 20, 2018, 6:51 AM Time taken 35 mins 9 s... ecs Grade 85.50 out of 90.00 (95%) Feedback You’re off to a good start. "A course grade of 70% is required to request a transcript. Yreattempt for a higher grade you can retake this assessment (only the first graded assesexam, and consider using tutoring anytime you get stuck. Remember that 10 hours of tmembership. Question 1 Correct 4.50 points out of 4.50 Flag question Question text A pure culture contains Select one: a. only one identified species of microorganism. b. only bacteria. c. microbes from a single source. d. a variety of species from the same genus. Feedback The correct answer is: only one identified species of microorganism. Question 2 Correct 4.50 points out of 4.50 Flag question Question text Which activity is an example of biotechnology? Select one: a. Bacteria in the soil secreting an antibiotic to kill competitors b. A microbiologist using the microscope to view bacteria c. Egyptians using moldy bread on wounds d. Escherichia coli producing human insulin e. Public health officials monitoring diseases in a community Feedback The correct answer is: Escherichia coli producing human insulin Question 3 Correct 4.50 points out of 4.50 Flag question Question text Select the statement that most accurately reflects the process of plant material digestion in humans. Select one: a. It is a very efficient process the produces very little undigested material in feces. b. It is a process that is dependent upon enzyme (cellulase) production by gut microbiota. c. It requires the action of enzymes called kinases. d. It is linked to the digestion of glycogen. Feedback The correct answer is: It is a process that is dependent upon enzyme (cellulase) production by gut microbiota. Question 4 Correct 4.50 points out of 4.50 Flag question Question text A nutrient medium that has all of its chemical components identified and their precise concentrations known and reproducible is termed ______. Select one: a. complex b. reducing c. enriched d. defined Feedback The correct answer is: defined Question 5 Correct 4.50 points out of 4.50 Flag question Question text A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on Select one: a. determining evolutionary relatedness. b. bioremediation. c. recombinant DNA. d. nomenclature. e. determining if that species is the cause of a new disease. Feedback The correct answer is: determining evolutionary relatedness. Question 6 Correct 4.50 points out of 4.50 Flag question Question text Which of the following are not considered microorganisms? Select one: a. Mosquitoes b. Protozoa c. Bacteria d. Viruses e. Fungi Feedback The correct answer is: Mosquitoes Question 7 Correct 4.50 points out of 4.50 Flag question Question text A microbiology student with a visual disability is viewing a sample of Bacillus endospores in a phase contrast microscope tha [Show More]

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