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- Question
Which of the following is correct?
Options- A. A Winogradsky column is used to filter out microorganisms from a water sample taken from a deep black smoker
- B. A Winogradsky column is used to demonstrate interactions and gradients that occur in aquatic environments
- C. Both (a) and (b)
- D. A Winogradsky column is used to filter out microorganisms from non-aquatic environments
- Correct Answer
- A Winogradsky column is used to demonstrate interactions and gradients that occur in aquatic environments
- 1. The Redfield ratio is an index of concentration of
Options- A. carbon, hydrogen and oxygen
- B. nitrogen, potassium and iron
- C. carbon, nitrogen and phosphorous
- D. carbon, phosphorous and sulfur Discuss
- 2. Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except
Options- A. Clostridium
- B. Rhodospirillum
- C. Chlorobium
- D. Escherichia Discuss
- 3. Which of the following species in water reveal the presence of fecal pollution of human or animal origin?
Options- A. E.coli
- B. Fecal Streptococci
- C. Clostridium perfringens
- D. All of these Discuss
- 4. Loss of carbon through the microbial loop in oligotrophic environments is __________ to/than the loss of carbon through the microbial loop in copiotrophic environments.
Options- A. greater
- B. lesser
- C. approximately equal
- D. half Discuss
- 5. The sulfur pearl of Namibia, Thiomargarita namibiensis
Options- A. is the worlds largest bacterium
- B. stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume
- C. Both (a) and (b)
- D. is the worlds smallest bacterium Discuss
- 6. The species of Acetobacter which produces cellulosic strands to hold the cells in lime layer is
Options- A. Acetobacter curvum
- B. Accetobacter orleanense
- C. Acetobacter xylinum
- D. Acetobacter schuetzenbachii Discuss
- 7. The sugar concentration of molasses used in fermentation should be
Options- A. 10-18%
- B. 20-30%
- C. 4-5%
- D. 30-38% Discuss
- 8. Which of the following agents involve biosensors linking with electronic circuit?
Options- A. Microorganisms
- B. Microbially derived enzymes
- C. Either microorganisms or microbially derived enzymes
- D. Neither microorganisms nor microbially derived enzymes Discuss
- 9. Which of the following organism is utilized for the production of D-L-alanine?
Options- A. Microbacterium ammoniaphilum
- B. Brevibacterium flavum
- C. Arthrobacter paraffineus
- D. C. glutamicum Discuss
- 10. The organism B. brevis can be used commercially for the production of
Options- A. gramicidin A
- B. tyrothricin(bacitracin tyrocidin complex)
- C. tyrocidin
- D. all of the above Discuss
Microbes in Aquatic Environment problems
Search Results
Correct Answer: carbon, nitrogen and phosphorous
Correct Answer: Escherichia
Correct Answer: All of these
Correct Answer: greater
Correct Answer: Both (a) and (b)
Correct Answer: Acetobacter xylinum
Correct Answer: 10-18%
Correct Answer: Microbially derived enzymes
Correct Answer: Microbacterium ammoniaphilum
Correct Answer: all of the above
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