Straighterline BIO250 Microbiology Graded Exam 1 (New Version June 2024)

Question 1 Correct 4.17 points out of 4.17 The incidence of deaths from communicable disease is in the United States compared to the entire world. Select one: a. less b. greater c. about the same Question 2 Correct 4.17 points out of 4.17 Using microbes to detoxify a site contaminated with heavy metals is an example of . Select one: a. immunology b. bioremediation c. epidemiology d. decomposition e. biotechnology Straighterline BIO250 Microbiology Graded Exam 1 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: or : +1 (540) 753-5914. Guaranteed Passing! Live Courses | Sciences | BIO250 | BIO250_MH_V6 | Unit 6: Viruses and Prions Started on State Finished Completed on Time taken 28 mins 19 secs Grade 120.83 out of 125.00 (97%)Question 4 Correct 4.17 points out of 4.17 Which area of biology states that living things undergo gradual structural and functional changes over long periods of time? Select one: a. Morphology b. Evolution c. Transformation d. Genetics e. Phylogeny Question 5 Incorrect 0.00 points out of 4.17 The first cells appeared about billion years ago. Select one: a. 2 b. 4 c. 3.5 d. 5 e. 1 The scientific method includes all of the following except . Select one: a. publication b. observation c. experimentation d. hypothesis Question 3 Correct 4.17 points out of 4.17Question 7 Correct 4.17 points out of 4.17 The orderly arrangement of organisms into a hierarchy of taxa is called . Select one: a. identification b. classification c. biotechnology d. experimentation e. nomenclature Question 8 Correct 4.17 points out of 4.17 Astrobiology is considered a sub-discipline of microbiology because . Select one: a. microbes are known to exist on other planets b. all extraterrestrials known are microbial c. only microbes can reproduce under the extreme conditions in outer space d. life elsewhere in the universe is likely to be microbial Which scientific name is written correctly? Select one: a. Staphylococcus aureus b. staphylococcus aureus c. Staphylococcusaureus d. S. aureus e. Staphylococcus aureus Question 6 Correct 4.17 points out of 4.17Question 10 Correct 4.17 points out of 4.17 Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that . Select one: a. bacteria, archaea, and eukaryotes are not related b. the Archaea are more closely related to bacteria than eukaryotes c. all modern and extinct organisms on earth arose from a common ancestor d. the eukaryotes arose from prokaryotes Question 11 Correct 4.17 points out of 4.17 All cells contain . Select one: a. uracil in their DNA b. cell walls made of cellulose c. mitochondria to generate ATP d. ribosomes for protein synthesis e. organelles for compartmentalization Koch's postulates are criteria used to establish that . Select one: a. a specific microbe should be classified in a specific kingdom b. microbes can be used to clean up toxic spills c. life forms can only arise from preexisting life forms d. microbes are found on dust particles e. a specific microbe is the cause of a specific disease Question 9 Correct 4.17 points out of 4.17Question 13 Correct 4.17 points out of 4.17 Substances that release ions when dissolved in water and conduct electricity are . Select one: a. electrolytes b. covalent c. nonpolar d. solvents e. electrons Question 14 Correct 4.17 points out of 4.17 The valence number is the . Select one: a. number of electrons in the innermost orbital b. number of electrons in the outermost orbital c. atomic weight d. number of neutrons e. number of protons The building blocks of an enzyme are . Select one: a. phosphate, glycerol, and fatty acids b. glycerol and fatty acids c. nucleotides d. monosaccharides e. amino acids Question 12 Correct 4.17 points out of 4.17Question 16 Correct 4.17 points out of 4.17 The simple microscopes used by the earliest practitioners of microscopy contained which of the following? Select one: a. Oil-immersion lens b. Magnifying lens c. Lamp d. Ocular e. Condenser Question 17 Correct 4.17 points out of 4.17 All of the following are examples of different types of microbiological media except . Select one: a. enriched b. agar c. broth d. semisolid e. Petri dish A textbook uses Paramecium to illustrate several types of light microscopy.Each image is magnified 230Xand measures about 4 cm. The actual size of a Paramecium is about . Select one: a. 0.2μm b. 4,000μm c. 920μm d. 57.5μm e. 175 μm Question 15 Correct 4.17 points out of 4.17Question 19 Correct 4.17 points out of 4.17 The division of microbes termed the Mendosicuteshave a cell wall type best described as . Select one: a. gram-negative b. archaeal c. gram-positive d. lacking a cell wall Question 20 Correct 4.17 points out of 4.17 The term that refers to the presence of flagella all over the cell surface is . Select one: a. amphitrichous b. atrichous c. peritrichous d. monotrichous e. lophotrichous Which method often results in colonies developing down throughout the agar along with some colonies on the surface? Select one: a. Spread plate b. Streak plate c. Pour plate d. Replica plate Question 18 Correct 4.17 points out of 4.17Question 22 Correct 4.17 points out of 4.17 Lysozyme is most effective against . Select one: a. archaea b. gram-negative organisms c. gram-positive organisms d. cyanobacteria e. mycoplasmas Question 23 Correct 4.17 points out of 4.17 All of the following are helminths except . Select one: a. tapeworms b. flukes c. trypanosomes d. pinworms e. roundworms A clinical laboratory that identifies the bacterial agents that cause human disease would refer to Bergey's Manual of Bacteriology for guidance in identification. Select one: a. Classical b. Systematic c. Determinative d. Evolutionary Question 21 Correct 4.17 points out of 4.17Question 25 Correct 4.17 points out of 4.17 Viral tissue specificities are called . Select one: a. virions b. uncoating c. receptacles d. ranges e. tropisms Question 26 Correct 4.17 points out of 4.17 The primary purpose(s) of viral cultivation is/are to . Select one: a. prepare viruses for vaccines b. isolate and identify viruses in clinical specimens c. do detailed research on viral structure, lifestyle, genetics, and effects on host cells d. perform wide-scale harvesting of viruses e. All of thechoices are correct. In humans, helminths generally infect the . Select one: a. skin b. muscular system c. gastrointestinal tract d. urinary tract e. nervous system Question 24 Correct 4.17 points out of 4.17Question 28 Correct 4.17 points out of 4.17 A microbiologist must culture a patient's feces for intestinal pathogens. Which of the following components would likely be present in a selective medium for this purpose? Select one: a. Sheep red blood cells b. Peptone c. Thioglycolic acid d. Bile salts e. NaCl Question 29 Correct 4.17 points out of 4.17 A reducing medium is used to culture organisms. Select one: a. aerobic b. fastidious c. anaerobic d. pathogenic Two noncellular agents, smaller than viruses, are infectious proteins called and infectious RNA strands called . Select one: a. viroids;phages b. prions;viroids c. virions;prions d. prions;capsomeres e. prions;phages Question 27 Correct 4.17 points out of 4.17Quiz navigation 1 2 3 4 28 29 30 5 6 7 8 9 25 26 27 Show one page at a time Finish review © 2023 StraighterLine. All rights reserved A reducing medium contains . Select one: a. extra oxygen b. inhibiting agents c. sugars that can be fermented d. substances that remove oxygen e. hemoglobin, vitamins, or other growth factors Question 30 Correct 4.17 points out of 4.17