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- Question
Which of the following bacteria is/are known as coliform bacilli?
Options- A. Escherichia
- B. Klebsiella
- C. Enterobacter
- D. All of these
- Correct Answer
- All of these
- 1. Metabolism of dissolved organic material released by phytoplankton allows heterotrophic bacteria to become part of the particulate organic matter that is passed up the food web to be metabolized and released as mineral elements and CO2 at each transfer. This sentence describes the
Options- A. microbial loop
- B. Winogradsky column
- C. Redfield ratio
- D. Gibbs free energy Discuss
- 2. Agar is used for solidifying culture media because
Options- A. it does not affect by the growth of bacteria
- B. it does not add to the nutritive properties of the medium
- C. the melting and solidifying points of agar solution are not the same
- D. all of the above Discuss
- 3. Which of the following is correct?
Options- A. All members of Hyphomycetes are also members of Fungi, but not all members of Fungi are members of Hyphomycetes
- B. All members of Fungi are also members of Hyphomycetes, but not all members of Hyphomycetes are members of Fungi
- C. All members of Hyphomycetes are members of Fungi, and all members of Fungi are members of Hyphomycetes
- D. No member of Hyphomycetes is a member of Fungi Discuss
- 4. Enzymes can
Options- A. not pass through semipermeable membrane
- B. pass through semipermeable membrane
- C. dissolve semipermeable membrane
- D. none of these Discuss
- 5. Intracellular enzymes
Options- A. synthesize cellular material only
- B. synthesize cellular material and perform catabolic reaction
- C. synthesize cellular material and perform anabolic reaction
- D. only provide energy to the cell Discuss
- 6. 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
- 7. Which of the following can be used to detect clumping factor?
Options- A. tube coagulase test
- B. slide coagulase test
- C. precipitation test
- D. none of these Discuss
- 8. 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
- 9. 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
- 10. The fragmentation occurs in
Options- A. Streptomyces species
- B. Nocardia species
- C. Bacillus subtilis
- D. None of these Discuss
More questions
Correct Answer: microbial loop
Correct Answer: all of the above
Correct Answer: All members of Hyphomycetes are also members of Fungi, but not all members of Fungi are members of Hyphomycetes
Correct Answer: not pass through semipermeable membrane
Correct Answer: synthesize cellular material and perform catabolic reaction
Correct Answer: double at a constant rate
Correct Answer: slide coagulase test
Correct Answer: all of the above
Correct Answer: Aerobic, glucose-respiring bacteria (aerobic respiration)
Correct Answer: Nocardia species
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