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Microbial Growth & Control of Microbial Growth

Microbial Growth & Control of Microbial Growth. Physical Requirements for Growth. Growth of Bacterial Cultures. Chemical Requirements for Growth. Control of Growth. Miscellaneous. $100. $100. $100. $ 100. $100. $200. $200. $200. $200. $200. $300. $300. $300. $300. $300. $400.

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Microbial Growth & Control of Microbial Growth

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  1. Microbial Growth & Control of Microbial Growth Physical Requirements for Growth Growth of Bacterial Cultures Chemical Requirements for Growth Control of Growth Miscellaneous $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 FINAL ROUND

  2. Topic 1: Physical Requirements$100 Question • How is a Psychrophile different from a Psychrotroph? ANSWER BACK TO GAME

  3. Topic 1:Physical Requirements$100 Answer • How is a Psychrophile different from a Psychrotroph? • A Psychrophile is a microbe that can grow at 0oC, grows optimally at 15oC, and usually won’t grow at 25oC. • A Psychrotroph is a microbe that can grow at 0oC, grows optimally at 20o-30oC, and usually won’t grow above 40oC. BACK TO GAME

  4. Topic 1: Physical Requirements$200 Question • Which one of the following is most likely to cause food spoilage in your refrigerator? • a. Psychrophile • b. Thermophile • c. Psychrotroph • d. Mesophile ANSWER BACK TO GAME

  5. Topic 1: Physical Requirements$200 Answer • Which one of the following is most likely to cause food spoilage in your refrigerator? • a. Psychrophile • b. Thermophile • c. Psychrotroph(correct answer) • d. Mesophile BACK TO GAME

  6. Topic 1:Physical Requirements$300 Question • What type of organism is Listeriamonocytogenes? • a. Psychrophile • b. Thermophile • c. Psychrotroph • d. Mesophile ANSWER BACK TO GAME

  7. Topic 1:Physical Requirements $300 Answer • What type of organism is Listeriamonocytogenes? • a. Psychrophile • b. Thermophile • c. Psychrotroph(correct answer) • d. Mesophile BACK TO GAME

  8. Topic 1: Physical Requirements$400 Question • What happens to most cells when they are exposed to a salt water solution? • Nothing • The cell swells and may undergo osmotic lysis • The cell immediately divides • The cell undergoes plasmolysis and shrinks ANSWER BACK TO GAME

  9. Topic 1:Physical Requirements$400 Answer • What happens to most cells when they are exposed to a salt water solution? • Nothing • The cell swells and may undergo osmotic lysis • The cell immediately divides • The cell undergoes plasmolysis and shrinks (correct answer) BACK TO GAME

  10. Topic 1: Physical Requirements$500 Question • Where might a hyperthermophile live? • a. At the ocean floor • b. In a human body • c. In acid • d. In salt water ANSWER BACK TO GAME

  11. Topic 1: Physical Requirements$500 Answer • Where might a hyperthermophile live? • a. At the ocean floor (correct answer) • b. In a human body • c. In acid • d. In salt water BACK TO GAME

  12. Topic 2: Chemical Requirements$100 Question • Chemoautotrophs and photoautotrophs derive their carbon from • a. Carbon dioxide • b. Proteins • c. Lipids • d. Carbohydrates ANSWER BACK TO GAME

  13. Topic 2: Chemical Requirements$100 Answer • Chemoautotrophs and photoautotrophs derive their carbon from • a. Carbon dioxide (correct answer) • b. Proteins • c. Lipids • d. Carbohydrates BACK TO GAME

  14. Topic 2:Chemical Requirements$200 Question • Microbial metabolism is responsible for biogeochemical cycles. • True • False ANSWER BACK TO GAME

  15. Topic 2:Chemical Requirements$200 Answer • Microbial metabolism is responsible for biogeochemical cycles. • True (correct answer) • False BACK TO GAME

  16. Topic 2: Chemical Requirements$300 Question A D • In which of the above tubes are Facultative Anaerobes growing? C E B ANSWER BACK TO GAME

  17. Topic 2: Chemical Requirements$300 Answer A D • In which of the above tubes are Facultative Anaerobes growing? • Correct Answer: B C E B BACK TO GAME

  18. Topic 2: Chemical Requirements$400 Question • All organisms require amino acids to make proteins. How might amino acids be acquired? • a. Kreb cycle intermediates • b. Environment • c. Glycolysis intermediates • d. All of the above ANSWER BACK TO GAME

  19. Topic 2: Chemical Requirements$400 Answer • All organisms require amino acids to make proteins. How might amino acids be acquired? • a. Kreb cycle intermediates • b. Environment • c. Glycolysis intermediates • d. All of the above (correct answer) BACK TO GAME

  20. Topic 2:Chemical Requirements$500 Question • Give an example of a biofilm residing inside the body of an animal. ANSWER BACK TO GAME

  21. Topic 2:Chemical Requirements$500 Answer • Give an example of a biofilm inside the body of an animal. • Examples include: digestive systems, bacterial endocarditis, on teeth BACK TO GAME

  22. Topic 3:Growth of Bacterial Cultures$100 Question • Generation time can best be defined as • a. The length of time it takes for lag phase • b. The duration of log phase • c. The length of time it takes for a cell to divide • d. The amount of time it takes the cell to replicate its chromosome ANSWER BACK TO GAME

  23. Topic 3:Growth of Bacterial Cultures$100 Answer • Generation time can best be defined as • a. The length of time it takes for lag phase • b. The duration of log phase • c. The length of time it takes for a cell to divide (correct answer) • d. The amount of time it takes the cell to replicate its chromosome BACK TO GAME

  24. Topic 3: Growth of Bacterial Cultures$200 Question • Why can’t obligate anaerobes live in the presence of oxygen (yes, they die, but why?) ANSWER BACK TO GAME

  25. Topic 3:Growth of Bacterial Cultures$200 Answer • Why can’t obligate anaerobes live in the presence of atmospheric oxygen (yes, they die, but why?) • Correct answer: Obligate anaerobes do not produce the enzymes (superoxide dismutase, catalase, peroxidase) necessary to neutralize the toxic forms oxygen takes in the cell BACK TO GAME

  26. Topic 3: Growth of Bacterial Cultures$300 Question • What is happening in cell A? A B C ANSWER BACK TO GAME

  27. Topic 3:Growth of Bacterial Cultures$300 Answer What is happening in cell A? Correct answer: DNA Replication A B C BACK TO GAME

  28. Topic 3:Growth of Bacterial Cultures$400 Question • Which of the areas in the bacterial growth curve represent the lag phase? ANSWER BACK TO GAME

  29. Topic 3: Growth of Bacterial Cultures$400 Answer • Which of the areas in the bacterial growth curve represent the lag phase? • Correct Answer: 1 BACK TO GAME

  30. Topic 3: Growth of Bacterial Cultures$500 Question • Why did the population level off at area 3? ANSWER BACK TO GAME

  31. Topic 3:Growth of Bacterial Cultures$500 Answer • Why did the population level off at area 3? • Correct answer: An increase in wastes and decrease in nutrients in an enclosed environment. BACK TO GAME

  32. Topic 4:Control of Microbial Growth$100 Question • In this graph, an antimicrobial agent was applied. Was this antimicrobial agent • Bacteriostatic or Bactericidal ANSWER BACK TO GAME

  33. Topic 4:Control of Microbial Growth$100 Answer • In this graph, an antimicrobial agent was applied. Was this antimicrobial agent • Bacteriostatic (correct answer) BACK TO GAME

  34. Topic 4: Control of Microbial Growth $200 Question • What will increase the effectiveness of most antiseptics and disinfectants? • Large number of microbes present • Presence of endospores • Presence of organic matter • Presence of biofilms • None of the above ANSWER BACK TO GAME

  35. Topic 4:Control of Microbial Growth $200 Answer • What will increase the effectiveness of most antiseptics and disinfectants? • Large number of microbes present • Presence of endospores • Presence of organic matter • Presence of biofilms • None of the above (correct answer) BACK TO GAME

  36. Topic 4: Control of Microbial Growth $300 Question • What works better- Dry heat or Moist heat? ANSWER BACK TO GAME

  37. Topic 4:Control of Microbial Growth $300 Answer • What works better- Dry heat or Moist heat? • Moist heat (correct answer) BACK TO GAME

  38. Topic 4:Control of Microbial Growth $400 Question • Radiation primarily affects • Plasma membranes • Protein synthesis • DNA • Protein structure ANSWER BACK TO GAME

  39. Topic 4:Control of Microbial Growth $400 Answer • Radiation primarily affects • Plasma membranes • Protein synthesis • DNA (correct answer) • Protein structure BACK TO GAME

  40. Topic 4: Control of Microbial Growth $500 Question • Pasteurization is the same as complete sterilization. • True • False ANSWER BACK TO GAME

  41. Topic 4:Control of Microbial Growth $500 Answer • Pasteurization is the same as complete sterilization. • True • False (correct answer) BACK TO GAME

  42. Topic 5: Misc.$100 Question • What are the building blocks of DNA and RNA called? ANSWER BACK TO GAME

  43. Topic 5: Misc.$100 Answer • What are the building blocks of DNA and RNA called? • Nucleotides (correct answer) BACK TO GAME

  44. Topic 5:Misc.$200 Question • Which is the deoxyribose? A B C ANSWER D BACK TO GAME E

  45. Topic 5:Misc.$200 Answer • Correct Answer: A BACK TO GAME

  46. Topic 5: Misc.$300 Question • Nitrogen bases can be ‘complimentary’. What does that mean? ANSWER BACK TO GAME

  47. Topic 5: Misc.$300 Answer • Nitrogen bases can be ‘complimentary’. What does that mean? • Correct answer: A only forms weak hydrogen bonds with T and C only forms weak hydrogen bonds with G. BACK TO GAME

  48. Topic 5: Misc.$400 Question • A ‘gene’ is a section of DNA that codes for a functional product, such as….. ANSWER BACK TO GAME

  49. Topic 5: Misc.$400 Answer • A ‘gene’ is a section of DNA that codes for a functional product, such as….. • Correct Answer: A protein (primarily) BACK TO GAME

  50. Topic 5: Misc.$500 Question • In the Keepers of the Biosphere video, relationships between organisms in the rain forest were examined. Fungi in the rain forest had a symbiotic relationship with what organism? ANSWER BACK TO GAME

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