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- Question
What is the primary source of food for marine life?
Options- A. Phytoplankton
- B. Zooplankton
- C. Sea weed
- D. Grass
- Correct Answer
- Phytoplankton
- 1. Which of the following organisms typically get their carbon for biosynthesis from organic compounds?
Options- A. Aerobic, glucose-respiring bacteria (aerobic respiration)
- B. Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
- C. Photosynthetic cyanobacteria (phototrophic metabolism)
- D. None of the above Discuss
- 2. A spore differs from an actively replicating bacterium in that the spore
Options- A. is produced during a process involving asymmetric division
- B. is able to withstand more extreme conditions than the replicating cell
- C. is metabolically inactive
- D. all of the above Discuss
- 3. Bacteria and fungi multiply best
Options- A. below 16°C
- B. between 16-38°C
- C. above 38°C
- D. none of these Discuss
- 4. In the exponential phase, the cells and cell mass
Options- A. first increases then decreases
- B. decreases
- C. are constant
- D. double at a constant rate Discuss
- 5. The equation used to obtain bacterial population by binary fission is
Options- A. N = No2n
- B. log N/No = (0.3010) n
- C. log(N/No) = nlog 2
- D. All of these Discuss
- 6. Nutrient content and biological structures are considered as
Options- A. implicit factor for microbial growth
- B. intrinsic factor for microbial growth
- C. processing factor
- D. none of the above Discuss
- 7. The cell reproduction in bacteria may occur by
Options- A. binary fission
- B. budding
- C. fragmentation
- D. all of these Discuss
- 8. All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as
Options- A. autotrophs
- B. phototrophs
- C. chemotrophs
- D. photo-organotrophs Discuss
- 9. Which of the following is the suitable temperature range for mesophiles?
Options- A. 20-30°C
- B. 25-40°C
- C. >40°C
- D. None of these Discuss
- 10. Which of the following organisms typically get their carbon for biosynthesis from carbon dioxide?
Options- A. Glucose-fermenting bacteria (fermentation)
- B. Anaerobic, glucose-respiring bacteria (anaerobic respiration)
- C. Aerobic, glucose-respiring bacteria (aerobic respiration)
- D. Ammonia-oxidizing bacteria (chemolithotrophic bacteria) Discuss
Growth and Nutrition of Bacteria problems
Search Results
Correct Answer: Aerobic, glucose-respiring bacteria (aerobic respiration)
Correct Answer: all of the above
Correct Answer: between 16-38°C
Correct Answer: double at a constant rate
Correct Answer: All of these
Correct Answer: intrinsic factor for microbial growth
Correct Answer: all of these
Correct Answer: autotrophs
Correct Answer: 25-40°C
Correct Answer: Ammonia-oxidizing bacteria (chemolithotrophic bacteria)
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