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Home ‣ Microbiology ‣ DNA Sequencing, Mutation and Repair See What Others Are Saying!
- Question
Genetic variations are
Options- A. temporary
- B. influenced by the environment
- C. stable
- D. not heritable
- Correct Answer
- stable
- 1. Because it can be used with a variety of media and allow a resuscitation step the __________ technique has become the common and often preferred method of evaluating the microbiological characteristics of water.
Options- A. most probable number
- B. Winogradsky
- C. MUG
- D. membrane filtration Discuss
- 2. Which of the following property(ies), shown by the organisms belong(s) to the family Enterobacteriaceae?
Options- A. They are catalase-positive
- B. They are oxidase-negative
- C. They ferment glucose
- D. All of these Discuss
- 3. The hepadnaviruses such as hepatitis B virus are quite different from other DNA viruses with respect to genome replication. These replicate their DNA using
Options- A. DNA-dependent DNA polymerase
- B. reverse transcriptase
- C. Rnase H
- D. DNA ligase Discuss
- 4. Which of the following disease is caused by Yersinia enterocolitica in man?
Options- A. Gastroenteritis
- B. Mesenteric lymphadenitis
- C. Septicaemia
- D. All of these Discuss
- 5. Surface taint in butter which is blamed on Pseudomonas putrefaciens is also called as
Options- A. rabbito
- B. putridity
- C. both (a) and (b)
- D. none of these Discuss
- 6. The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are
Options- A. Steroid production in Yl mouse adrenal cell culture
- B. Morphological changes in Chinese hamster ovary
- C. Enzyme-linked immunosorbent assay
- D. All of these Discuss
- 7. The affinity of an enzyme for its substrate, when the enzyme has a Km of 0.50 M will be __________ than the affinity of an enzyme for its substrate when the enzyme has a Km of 0.05 M.
Options- A. greater
- B. lesser
- C. approximately equal
- D. half Discuss
- 8. Ascoli's thermoprecipition test helps in confirming the laboratory diagnosis of
Options- A. tetanus
- B. anthrax
- C. typhoid
- D. cholera Discuss
- 9. Which of the coxsackieviruses can cause herpangina?
Options- A. Group A
- B. Group B
- C. Both (a) and (b)
- D. None of these Discuss
- 10. The penicillin stable in gastric acid and suitable for oral administration is
Options- A. methicillin
- B. carbenicillin
- C. closacillin
- D. pencillin-G Discuss
More questions
Correct Answer: membrane filtration
Correct Answer: All of these
Correct Answer: reverse transcriptase
Correct Answer: All of these
Correct Answer: both (a) and (b)
Correct Answer: All of these
Correct Answer: lesser
Correct Answer: anthrax
Correct Answer: Group A
Correct Answer: closacillin
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