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- Question
Which of the following is used to grow bacterial cultures continuously?
Options- A. Chemostat
- B. Coulter Counter
- C. Hemostat
- D. Petroff-Hausser chamber
- Correct Answer
- Chemostat
- 1. The generation time of a culture that produces two generations per hour is
Options- A. greater than that produces three generations per hour
- B. lesser than that produces three generations per hour
- C. equal to that produces three generations per hour
- D. none of the above Discuss
- 2. During exponential growth, the growth rate is
Options- A. number of generations per unit time
- B. reciprocal of generation time
- C. both (a) and (b)
- D. none of these Discuss
- 3. Lag phase is also known as
Options- A. period of initial adjustment
- B. transitional period
- C. generation time
- D. none of these Discuss
- 4. Postgates assay technique is useful in determining if a cell is viable even though it is
Options- A. incapable of cell division
- B. too small to see
- C. an obligate aerobe
- D. a thermophile Discuss
- 5. Exponential phase of growth curve of bacteria is of limited duration because of
Options- A. rise in cell density
- B. accumulation of toxic metabolites
- C. exhaustion of nutrients
- D. all of these Discuss
- 6. The straightforward method of binary fission explains how bacteria
Options- A. grow in nutrient agar
- B. evolve
- C. move
- D. reproduce Discuss
- 7. Antimicrobial constituents for the microbial growth in foods are
Options- A. intrinsic factor
- B. extrinsic factor
- C. both (a) and (b)
- D. none of these Discuss
- 8. Organisms, using organic compounds as electron donors are called
Options- A. lithotrophs
- B. phototrophs
- C. chemotrophs
- D. organotrophs Discuss
- 9. If the free energy change (?G) in a reaction is a negative value, it indicates that the
Options- A. reaction releases energy
- B. reaction absorbs energy
- C. reaction is in negative direction
- D. reaction is in positive direction Discuss
- 10. Oxidation is the
Options- A. loss of proton
- B. gain of electron
- C. loss of electron
- D. gain of protons Discuss
Growth and Nutrition of Bacteria problems
Search Results
Correct Answer: greater than that produces three generations per hour
Correct Answer: reciprocal of generation time
Correct Answer: period of initial adjustment
Correct Answer: incapable of cell division
Correct Answer: all of these
Correct Answer: reproduce
Correct Answer: intrinsic factor
Correct Answer: organotrophs
Correct Answer: reaction releases energy
Correct Answer: loss of electron
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