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- Question
Nitrifying bacteria can not be isolated directly by the usual techniques employed to isolate hetrotrophic bacteria. The reasons may be due to
Options- A. slow growth
- B. medium growth
- C. fast growth
- D. none of these
- Correct Answer
- slow growth
- 1. What is the colour of gram-negative bacteria on a gram staining?
Options- A. Purple
- B. Pink
- C. Green
- D. Colourless Discuss
- 2. Microcapsules are composed of
Options- A. proteins
- B. polysaccharides
- C. lipids
- D. all of these Discuss
- 3. Commercially available ELISA kits are used for the detection of
Options- A. rotavirus
- B. hepatitis B surface antigen
- C. anti-HIV antibodies
- D. all of these Discuss
- 4. Standard free energy change (?G) can be expressed as
Options- A. ?G° = -RTlnkeq
- B. ?G° = RTlnkeq
- C. ?G° = R/Tlnkeq
- D. ?G° = -RT/lnkeq Discuss
- 5. Which of the following is used to grow bacterial cultures continuously?
Options- A. Chemostat
- B. Coulter Counter
- C. Hemostat
- D. Petroff-Hausser chamber Discuss
- 6. Digestive reactions where large molecules are broken down into smaller ones are referred as
Options- A. anabolism
- B. catabolism
- C. metabolism
- D. biosynthesis Discuss
- 7. Which of the following microorganisms is classified as a member of archaebacteria?
Options- A. Gyanobacteria
- B. Methanobacteria
- C. Trichomonads
- D. Mycoplasma Discuss
- 8. Which of the following is true about cell wall of gram-positive bacteria?
Options- A. It consists of multiple layers
- B. It is thicker than that associated with gram-negative bacteria
- C. It contains teichoic acids
- D. All of these Discuss
- 9. Overactivity of Th cells may result into
Options- A. autoimmunity
- B. optimal antibody response
- C. optimal cell-mediated response
- D. none of the above Discuss
- 10. Sereny test is used for the detection of
Options- A. enteropathogenic Escherichia coli
- B. enterotoxigenic E. coli
- C. enteroinvasive E. coli
- D. verotoxigenic E. coli Discuss
More questions
Correct Answer: Pink
Correct Answer: all of these
Correct Answer: all of these
Correct Answer: ?G° = -RTlnkeq
Correct Answer: Chemostat
Correct Answer: catabolism
Correct Answer: Methanobacteria
Correct Answer: All of these
Correct Answer: autoimmunity
Correct Answer: enteroinvasive E. coli
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