Discussion
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- Question
Which of the following defines an open reading frame (ORF)?
Options- A. A sequence of genome in bacteriophage
- B. The sequence of a complete genome
- C. A plasmid vector used in genome sequencing
- D. A possible gene predicted by DNA sequencing
- Correct Answer
- A possible gene predicted by DNA sequencing
- 1. The secretary component of sIgA is
Options- A. made by plasma cells that secrete dimeric IgA
- B. added to dimeric IgA by the M cell
- C. formed by cleavage of an epithelial cell receptor used to transport the dimeric IgA across the epithelial cell
- D. made by T cells Discuss
- 2. The canned acid foods such as pineapple, tomatoes and pears have been found spoiled by C. pasteurianum. Such spoilage is more likely when the pH of the food is
Options- A. >4.5
- B. <4.5
- C. >5.3
- D. <5.3 Discuss
- 3. Beef hams are made spongy by species of
Options- A. Rhodotorula
- B. Bacillus
- C. Pseudomonas
- D. red Bacillus Discuss
- 4. Stormy clot reaction is useful in identification of
Options- A. C tetani
- B. C botulinum
- C. C perfringens
- D. C difficile Discuss
- 5. Biogas production is
Options- A. a temperature-dependent process
- B. a temperature independent process
- C. an oxygen dependent process
- D. none of the above Discuss
- 6. Semi-solid media, prepared with agar at concentrations of 0.5% or less are useful for the cultivation of
Options- A. Microaerophillic bacteria
- B. Lactobacilli
- C. E.coli
- D. all of these Discuss
- 7. When a substance is added to a liquid medium which inhibits the growth of unwanted bacteria and favors the growth of wanted bacteria, it is known as
Options- A. differential medium
- B. enriched medium
- C. enrichment medium
- D. selective medium Discuss
- 8. Microbes can be removed from a liquid solution by the process of
Options- A. filtration
- B. freeze-drying
- C. osmosis
- D. desiccation Discuss
- 9. The viral DNA is removed from the host's chromosomes and the lytic cycle occurs. The process is called
Options- A. spontaneous induction
- B. inductive infection
- C. resultant induction
- D. spontaneous infection Discuss
- 10. Plate counts are often reported as
Options- A. cfu
- B. cfu/ml
- C. Both (a) and (b)
- D. thousands/ml Discuss
More questions
Correct Answer: formed by cleavage of an epithelial cell receptor used to transport the dimeric IgA across the epithelial cell
Correct Answer: >4.5
Correct Answer: Bacillus
Correct Answer: C perfringens
Correct Answer: a temperature-dependent process
Correct Answer: Microaerophillic bacteria
Correct Answer: enrichment medium
Correct Answer: filtration
Correct Answer: spontaneous induction
Correct Answer: cfu/ml
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