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- Question
Bacteriophages have been used widely in genetic research, since they are the smallest and simplest biological entities capable of
Options- A. self-replication
- B. duplication
- C. self-duplication
- D. multiplication
- Correct Answer
- self-replication
- 1. The infected cells continue to reproduce themselves as well as the virus, and the mature virions are extruded from the cell surface continuously over a long period of time. This type of release mechanism is called a
Options- A. productive infection
- B. inductive infection
- C. resultant infection
- D. all of these Discuss
- 2. Which of the following virus is enveloped?
Options- A. Adeno
- B. Herpes
- C. Polio
- D. None of these Discuss
- 3. Lesions on chorioallantoic membrane are produced by
Options- A. Herpes B virus
- B. Vaccinia virus
- C. Herpes simplex virus
- D. all of these Discuss
- 4. Which of the following viruses belong to family Hepadnaviridae?
Options- A. Hepatitis A virus
- B. Hepatitis B virus
- C. Hepatitis D virus
- D. All of these Discuss
- 5. During the first 10 minutes after injection of phage DNA, no phage can be recovered by disrupting the infected bacterium. This is termed as
Options- A. eclipse period
- B. rise period
- C. latent period
- D. burst size Discuss
- 6. The phage components begin to assemble into mature phages only after the synthesis of
Options- A. structural protein
- B. nucleic acid
- C. Both (a) and (b)
- D. amino acids Discuss
- 7. Invertase has its application in confectionaries to prevent crystallization of sugar. It is obtained from
Options- A. A. oryzae
- B. A. niger
- C. S. cerevisae
- D. B. subtilis Discuss
- 8. The penicillin F which was produced at first, required the mold
Options- A. Penicillium chrysogenum
- B. Pencillium notatum
- C. Pencillium chrysogenum Q-176
- D. none of the above Discuss
- 9. The micro-organism used for industrial production of lactic acid using corn dextrose as media is
Options- A. Lactobacillus bulgaricus
- B. Lactobacillus delbrueckii
- C. Lactobacillus pentosus
- D. Streptococcus lactis Discuss
- 10. The organism commonly used for the production of ? carotene is/ are
Options- A. Phycomyces blakesleeanus
- B. Cnoanephora cucurbitarum
- C. Blakeslea trispora
- D. all of these Discuss
Viruses problems
Search Results
Correct Answer: productive infection
Correct Answer: Herpes
Correct Answer: all of these
Correct Answer: Hepatitis B virus
Correct Answer: eclipse period
Correct Answer: Both (a) and (b)
Correct Answer: S. cerevisae
Correct Answer: Pencillium notatum
Correct Answer: Lactobacillus delbrueckii
Correct Answer: all of these
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