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Home ‣ Microbiology ‣ Antimicrobial Chemotherapeutic Agents See What Others Are Saying!
- Question
Bacterial cells susceptible to penicillium can be protected from destruction if the medium in which they are exposed is of
Options- A. high osmotic pressure
- B. low osmotic pressure
- C. moderate osmotic pressure
- D. high surface tension
- Correct Answer
- high osmotic pressure
- 1. What can be coated to the plastic dish if an ELISA is performed to directly detect polio virus?
Options- A. Patient serum
- B. Anti-polio antibody
- C. Polio capsid protein
- D. Colored substrate Discuss
- 2. ATPase
Options- A. synthesizes ATP, coupled to transfer of extracellular protons into the cell
- B. extrudes protons from the cell coupled to the hydrolysis of ATP to ADP
- C. is the enzyme that incorporates ATP into messenger RNA
- D. carries out each of the reactions indicated in (a) and (b) Discuss
- 3. Fluorescence microscopy can be used for the diagnosis of
Options- A. Subacute sclerosing panencephalitis
- B. Herpes simplex encephalitis
- C. Rabies
- D. All of these Discuss
- 4. The next to last step in peptidoglycan biosynthesis is
Options- A. synthesis of the NAM-peptide subunit
- B. removal of the subunit from bactoprenol
- C. linking the sugar of the disaccharide-peptide unit to the growing peptidoglycan chain
- D. cross-linking the peptide side chains of peptidoglycan Discuss
- 5. Radioisotopes are frequently used in the study of cells. Assume a culture of E. coli is grown in a culture medium containing radioactive phosphorous. At the end of 48 hours, it is expected to find the radioactive label located in
Options- A. enzymes
- B. RNA
- C. phospholipids
- D. all of these Discuss
- 6. Which of the following is recommended for the improvement in flavor during ageing of beef under controlled conditions?
Options- A. Thamnidium
- B. Rhizopus
- C. T. elegans
- D. M. mucedo Discuss
- 7. A nonsense mutation introduced into the DNA sequence of a gene may
Options- A. cause premature termination of the mRNA
- B. shorten the length of the protein encoded by the gene
- C. have no effect on the transcript or protein made
- D. cause a shift in reading frame Discuss
- 8. The most important organism involved in manufacture of Koji is
Options- A. Aspergillus oryzae
- B. Aspergillus soyae
- C. both (a) and (b)
- D. Lactobacillus lactis Discuss
- 9. The spoilage of eggs by fungi goes through stages of mold growth that give the defects their names. Very early mold growth is termed
Options- A. pin-spot molding
- B. fungal rotting
- C. superficial fungal spoilage
- D. any of these Discuss
- 10. In cell culture, measles virus may lead to
Options- A. nuclear pyknosis
- B. transformation of cells
- C. syncytium formation
- D. rounding and aggregation of cells Discuss
More questions
Correct Answer: Anti-polio antibody
Correct Answer: carries out each of the reactions indicated in (a) and (b)
Correct Answer: All of these
Correct Answer: linking the sugar of the disaccharide-peptide unit to the growing peptidoglycan chain
Correct Answer: all of these
Correct Answer: Thamnidium
Correct Answer: shorten the length of the protein encoded by the gene
Correct Answer: both (a) and (b)
Correct Answer: pin-spot molding
Correct Answer: syncytium formation
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