I have here are all multiple choices questions. Please help answer them all. I do not need explanation. Just need correct answers for them. Thank you.
1. Which of the following includes unicellular organisms? A. Archaea B. Bacteria C. Eukarya D. A and B E. All of the above
2. Which of the following is NOT true of prokaryotes? A. Abundant on and within the human body B. Important for the stability and thriving of ecosystems C. Metabolically flexible D. Ubiquitous E. All of the above are true
3. One gram of soil may contain up to 10 billion microorganisms belonging to about 1,000 species. A. True B. False
4. The process of converting carbon dioxide to organic carbon products is called ___________. A. Aerobic respiration B. Carbon fixation C. Fermentation D. Glycolysis E. Nitrogen fixation 5. When two species benefit from each other, the symbiosis is called mutualism. A. True B. False
6. A type of symbiosis in which one population harms the other but remains unaffected itself is called ___________________________. A. Amensalism B. Commensalism C. Mutualism D. Neutralism E. Parasitism
7. An example of ___________________ is the coexistence of metabolically active (vegetating) bacteria and endospores (dormant, metabolically passive bacteria). A. Amensalism B. Commensalism C. Mutualism D. Neutralism E. Parasitism
8. Which of the following is NOT true of resident microbiota? A. Constantly live in or on our bodies B. Important for human health C. Inhabit in different areas of the human body D. May include pathogenic microorganisms E. All of the above are true
9. More recently, prokaryotes have been classified based on their small subunit ribosomal RNA sequences. A. True B. False
10. Which of the following terms refers to bacteria that cannot be stained by the standard Gram stain procedure? A. Atypical B. Gram-negative C. Gram-positive D. Gram variable E. None of the above
11. Which of the following is the Alphaproteobacteria that causes Rocky Mountain spotted fever, a life-threatening form of meningoencephalitis? A. Chlamydia B. Rickettsia prowazekii C. Rickettsia rickettsii D. Rickettsia typhi E. None of the above
12. In the life cycle of Chlamydia, which of the following is metabolically and reproductively inactive and enters an epithelial cell? A. Elementary body B. Endospore C. Microcyst D. Reticulate body E. Spore
13. Which of the following alphaproteobacteria are nitrogen-fixing bacteria that live in soil and form symbiotic relationship with roots of legumes (e.g., clover, alfalfa, and beans)? A. Agrobacterium B. Brucella C. Chlamydia D. Rhizobium E. Rickettsia Review
14. Which of the following proteobacteria are eutrophs? A. Alphaproteobacteria B. Betaproteobacteria C. Gammaproteobacteria D. Deltaproteobacteria E. Epsilonproteobacteria
15. Which of the following is NOT true of Pseudomonas aeruginosa? A. Cause of chronic urinary tract infections B. Normally used to degrade xenobiotics C. Resistant to many antibiotics D. Strictly aerobic E. All of the above are true
16. Which of the following bacterium produces bioluminescence and engages in a symbiotic relationship with squid? A. Aliivibrio fischeri B. Haemophilus ducreyi C. Pseudomonas fluorescens D. Vibrio cholerae E. None of the above
17. Which of the following is NOT true of Enterobacteriaceae? A. A large family of enteric (intestinal) bacteria B. Belonging to the Gammaproteobacteria C. Facultative anaerobes D. Ferment lactose completely E. Include two distinct categories: coliform and noncoliform
18. Which of the following belongs to coliform bacteria? A. Escherichia coli B. Salmonella spp. C. Shigella spp. D. Yersinia pestis E. None of the above
19. Which of the following deltaproteobacteria are parasites of other gram-negative bacteria? A. Bdellovibrio B. Campylobacter C. Desulfovibrio D. Myxobacterium E. All of the above
20. Helicobacter pylori has been identified as a beneficial member of the stomach microbiota, but it is also the most common cause of chronic gastritis and ulcers of the stomach and duodenum. A. True B. False
21. Which of the following is NOT true of spirochetes? A. Darkfield fluorescent microscopy is typically used to identify B. Fastidious C. Highly mobile D. Spiral-shaped body E. Use axial filament found outside the cell envelope
22. Which of the following STDs is the third most prevalent sexually transmitted bacterial infection in the United States caused by Treponema pallidum? A. Chancroid B. Chlamydia C. Gonorrhea D. Syphilis E. None of the above
23. Which of the following is NOT true of Lyme disease? A. A vector-borne disease B. Caused by Borrelia burgdorferi C. Often produces a “bull’s eye” rash D. Transmitted by several genera of ticks E. All of the above are true
24. Which of the following is NOT true of the CFB group? A. Able to process cellulose in rumen B. Avid fermenters C. Mostly pathogenic D. Rod-shape bacteria E. All of the above are true 25. Which of the following makes up about 30% of the entire gut microbiome? A. Bacteroides B. Chlostridia C. Cytophaga D. Fusobacterium E. None of the above
26. Most Bacteroides are mutualistic. A. True B. False
27. Which of the following is NOT true of the Planctomycetes? A. Found in aquatic environments B. Reproduce by budding C. Swarmer cells are able to reproduce D. Sessile cells have an appendage called a holdfast E. All of the above are true
28. Which of the following performs oxygenic photosynthesis? A. Cyanobacteria B. Green nonsulfur bacteria C. Green sulfur bacteria D. Purple nonsulfur bacteria E. Purple sulfur bacteria 29. Which of the following phototrophic bacteria produces methane? A. Cyanobacteria B. Green nonsulfur bacteria C. Green sulfur bacteria D. Purple nonsulfur bacteria E. Purple sulfur bacteria
30. Many of Cyanobacteria fix nitrogen, converting molecular nitrogen into nitrites and nitrates. A. True B. False
31. Which of the following is true of the Actinobacteria? A. High G+C gram-positive bacteria B. Mostly aerobic C. Most live in the soil, but some are aquatic D. Possess several different peptidoglycans in the cell wall E. All of the above are true
32. Which of the following is NOT true of the genus Corynebacterium spp.? A. Contain diaminopimelic acid in their cell walls B. High G+C gram-positive bacteria C. Often form palisades D. The vast majority are nonpathogenic E. All of the above are true
33. Streptococci are usually classified by serotypes called Lancefield groups and by their ability to lyse red blood cells when grown on blood agar. A. True B. False
34. Which of the following is true of Clostridia? A. Bacillus in shape B. Low G+C gram-positive bacteria C. Obligate anaerobes D. Produce endospores E. All of the above are true
35. Which of the following associations is true? A. Clostridium botulinum – gas gangrene B. Clostridium difficile - hospital-acquired infection C. Clostridium perfringens - flaccid paralysis D. Clostridium tetani - third most common cause of food poisoning E. All of the above are true
36. Which of the following is NOT true of the genus Bacillus? A. Bacillus in shape B. Can produce endospores C. Obligate anaerobes D. Used in various industries E. All of the above are true
37. Which of the following is true of the genus Staphylococcus? A. Bacillus in shape B. Halophilic C. Motile D. Obligate anaerobes E. All of the above are true
38. Which of the following is NOT true of Mycoplasma? A. Bacillus in shape B. Low G+C gram-positive bacteria C. No cell walls D. Not stained by Gram stain E. Pleomorphic
39. Only archaea are known to produce methane. A. True B. False
40. Which of the following is NOT true of the class Halobacteria? A. Belong to Euryarchaeota B. Include halophilic (“salt-loving”) bacteria C. Perform photosynthesis using the protein bacteriorhodopsin D. Require a very high concentrations of sodium chloride E. All of the above are true