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Home ‣ Microbiology ‣ DNA Sequencing, Mutation and Repair See What Others Are Saying!
- Question
The DNA sequences of rRNA genes can be used to
Options- A. assess relatedness of eukaryotes but not prokaryotes
- B. obtain a tentative identification of a new microorganism
- C. predict the pulsed field gel pattern of a microorganism
- D. predict whether a bacteria will be gram-positive or gram-negative
- Correct Answer
- obtain a tentative identification of a new microorganism
- 1. Which of the following is considered the most unifying concept in biology?
Options- A. Taxonomy
- B. Anatomy
- C. Genetics
- D. Evolution Discuss
- 2. The temperate phage that have no site specificity for insertion and may even be able to insert multiple copies of their DNA into a single bacterial chromosome is
Options- A. ? phage enzyme
- B. ? DNA
- C. Phage Mu
- D. Phage Mn Discuss
- 3. Which is not an essential part of a two-component phosphorelay system?
Options- A. Response regulator
- B. Sensor kinase
- C. Autoinducer
- D. None of these Discuss
- 4. Transmission of Molluscum contagiosum virus is through
Options- A. direct contact
- B. sexual contact
- C. both (a) and (b)
- D. none of these Discuss
- 5. Unopened, sliced bacon, packaged in material somewhat highly resistant to oxygen permeability, is spoiled mostly by
Options- A. Lactobacilli
- B. Micrococci
- C. fecal Streptococci
- D. molds Discuss
- 6. The specific enzyme/(s) of the glyoxylate cycle is/are
Options- A. isocitrate lyase
- B. malate synthase
- C. both (a) and (b)
- D. anaplerotic Discuss
- 7. Negative regulation of protein synthesis is accomplished by
Options- A. allosteric inhibition
- B. the binding of RNA polymerase to the promoter
- C. the binding of a repressor to the DNA
- D. the binding of a repressor to the RNA polymerase Discuss
- 8. The word, used for the small solid supports onto which are spotted hundreds of thousands of tiny drops of DNA that can be used to screen gene expression, is
Options- A. southern blot
- B. cloning library
- C. DNA microarrays
- D. northern blot Discuss
- 9. A characteristic of protein synthesis in both the archaea and eukarya is
Options- A. transcription and translation are coupled
- B. translation is inhibited by diphtheria toxin
- C. proteins are synthesized from D-, rather than L-, isomers of amino acids
- D. the initiator tRNA is charged with N-formyl-methionine Discuss
- 10. The favouring conditions for floaters is
Options- A. high intial amounts of salt
- B. thick skin that does not allow gas to diffuse out
- C. both (a) and (b)
- D. none of these Discuss
More questions
Correct Answer: Evolution
Correct Answer: Phage Mu
Correct Answer: Autoinducer
Correct Answer: both (a) and (b)
Correct Answer: Lactobacilli
Correct Answer: both (a) and (b)
Correct Answer: the binding of a repressor to the DNA
Correct Answer: DNA microarrays
Correct Answer: proteins are synthesized from D-, rather than L-, isomers of amino acids
Correct Answer: both (a) and (b)
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