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- Question
Accumulation of lactate leads to
Options- A. increase in pH
- B. no change in pH
- C. reduction in the pH of culture hence loss of cell viability
- D. no loss of cell viability
- Correct Answer
- reduction in the pH of culture hence loss of cell viability
- 1. When plated only in nutrient medium, how much time is required for the protoplast to synthesize new cell wall?
Options- A. 2-5 days
- B. 5-10 days
- C. 10-15 days
- D. 15-17 days Discuss
- 2. P1 cloning vector allow cloning of DNA of the length of
Options- A. 100 kbp
- B. 50 kbp
- C. 20 kbp
- D. 10 kbp Discuss
- 3. Which of these carries the thousands of genes needed to allow animal and plant cells to pass on inherited characteristics?
Options- A. Chromosomes
- B. Chromatogram
- C. Chromatography
- D. Chromium Discuss
- 4. pH of culture medium is initially controlled by
Options- A. presence of CO2
- B. presence of bicarbonate buffer
- C. addition of bases
- D. none of these Discuss
- 5. Some types of variation are due to changes in the genetic material. What is this type of change called?
Options- A. Fertilisation
- B. Mutation
- C. Radiation
- D. Sterilisation Discuss
- 6. Which of the following is the word used to describe what happens when the nucleus of a sperm joins with the nucleus of an egg cell?
Options- A. Sex
- B. Fertilisation
- C. Intercourse
- D. Reproduction Discuss
- 7. For culturing, plasma from the adult chicken is preferred to mammalian plasma because
Options- A. it forms a clear and solid coagulum even after dilution
- B. it is too opaque
- C. it doesn't produce solid clots
- D. it forms a semi solid coagulum Discuss
- 8. In animal cell culture, particularly mammalian cell culture, transformation means
Options- A. uptake of new genetic material
- B. phenotypic modifications of cells in culture
- C. both (a) and (b)
- D. release of genetic information Discuss
- 9. Multiple ovulation and embryo transfer (MOET)
Options- A. can increase the rate of progress in dairy cattle
- B. allows progeny testing of males
- C. allows progeny testing of females
- D. all of the above Discuss
- 10. 5-fluoro orotic acid inhibits the growth if one of the following marker is present in the yeast. That is
Options- A. His 3
- B. Lys 2
- C. Ura 3
- D. Trp 1 Discuss
More questions
Correct Answer: 5-10 days
Correct Answer: 100 kbp
Correct Answer: Chromosomes
Correct Answer: presence of bicarbonate buffer
Correct Answer: Mutation
Correct Answer: Fertilisation
Correct Answer: it forms a clear and solid coagulum even after dilution
Correct Answer: phenotypic modifications of cells in culture
Correct Answer: all of the above
Correct Answer: Ura 3
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