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- Question
In the time since E. coli and Salmonella diverged evolutionarily
Options- A. there has been little change in either genome
- B. E. coli has acquired many genes via horizontal transfer
- C. E, coli has lost approximately 50% of its genome
- D. none of these
- Correct Answer
- E, coli has lost approximately 50% of its genome
- 1. The species of bacteria, which possesses 250 genes for lipid biosynthesis is
Options- A. M. genitalium
- B. M. tuberculosis
- C. E. coli
- D. H. influenzae Discuss
- 2. 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
- 3. Studies of similarities and differences among the genomes of multiple organisms is carried out in
Options- A. comparative genomics
- B. proteomics
- C. functional genomics
- D. structural genomics Discuss
- 4. Proteomics is
Options- A. the study of algal genomes
- B. a branch of quantum physics dealing with proteins
- C. the study of formation of lipo-protein in animals
- D. the study of the entire collection of proteins expressed by an organism Discuss
- 5. Why Deinococcus radiodurans is able to survive massive exposure to radiation?
Options- A. Because it produces a thick shell which acts as a shield from the radiation
- B. Because it has unique DNA repair mechanisms
- C. Because its cellwall contains radioactive elements
- D. Because it has many copies of genes encoding DNA repair Discuss
- 6. What is the range of minimum set of genes required for life?
Options- A. 50-100 genes
- B. 250-350 genes
- C. 1000-1500 genes
- D. 1500-2000 genes Discuss
- 7. Which of the following theory is supported by the genomic sequence of the obligate intracellular parasite Rickettsia prowazekii?
Options- A. Parasitic bacteria have very large genomes
- B. Parasites have a definite genomic sequence similar to viruses
- C. Mitochondria have evolved from endosymbiotic bacteria
- D. All bacteria evolved from viruses Discuss
- 8. Which type of genomics studies the transcripts and proteins expressed by a genome?
Options- A. Comparative genomics
- B. Structural genomics
- C. Proteo genomics
- D. Functional genomics Discuss
- 9. Proofreading activity to maintain the fidelity of DNA synthesis
Options- A. occurs after the synthesis has been completed
- B. is a function of the 3'-5' exonuclease activity of the DNA polymerases
- C. requires the presence of an enzyme separate from the DNA polymerases
- D. occurs in prokaryotes but not eukaryotes Discuss
- 10. Which of the following enzymes unwind short stretches of DNA helix immediately ahead of a replication fork?
Options- A. DNA polymerases
- B. Helicases
- C. Single-stranded binding proteins
- D. Topoisomerases Discuss
Microbial Genetics problems
Search Results
Correct Answer: M. tuberculosis
Correct Answer: DNA microarrays
Correct Answer: comparative genomics
Correct Answer: the study of the entire collection of proteins expressed by an organism
Correct Answer: Because it has many copies of genes encoding DNA repair
Correct Answer: 250-350 genes
Correct Answer: Mitochondria have evolved from endosymbiotic bacteria
Correct Answer: Functional genomics
Correct Answer: is a function of the 3'-5' exonuclease activity of the DNA polymerases
Correct Answer: Helicases
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