Questions
25. What is gene therapy?
- [A] Pre-clinical testing for inherited diseases in newborns
- [B] Treatment of diseases caused by genetic defect using genes.
- [C] Genetic engineering using recombinant DNA technology.
- [D] Cancer treatment using in vitro cultured stem cells.
Answer: Option [B]
26. Which of the following is NOT an archaebacteria?
- [A] Halophiles
- [B] Methanogens.
- [C] Cyanobacteria
- [D] Thermophiles
Answer: Option [C]
27. Potential source of hyaluronic acid is ________
- [A] Streptococcus sp.
- [B] Staphylococcus sp.
- [C] Micrococcus sp
- [D] Bacillus sp.
Answer: Option [A]
28. The tools of genetic engineering allow us to manipulate ________ directly
- [A] RNA
- [B] DNA
- [C] cell membranes.
- [D] cell wall.
Answer: Option [B]
29. ________ obtains energy by oxidation of organic and inorganic compounds
- [A] Phototrophs.
- [B] Chemotrophs
- [C] Autotrophs
- [D] Heterotrophs
Answer: Option [B]
30. _____ use reduced organic molecules as carbon source.
- [A] Organotrophs
- [B] Heterotrophs
- [C] Autotrophs
- [D] Lithotrophs
Answer: Option [B]
31. Concentration of nitrogen source normally supplied in growth media is _____g/L.
- [A] 0.5.
- [B] 2.
- [C] 6
- [D] 10.
Answer: Option [B]
32. Concentration of trace elements is ________ mg/L
- [A] 0.5.
- [B] 1.5.
- [C] 2.5.
- [D] 3.5.
Answer: Option [A]
33. Trace element needed under specific growth conditions is _______.
- [A] Co
- [B] Be/li>
- [C] Ti
- [D] Al
Answer: Option [A]
34. Which one of the following represents carbon source?
- [A] Corn syrup.
- [B] Corn steep liquor.
- [C] soya meal.
- [D] Groundnut meal.
Answer: Option [A]
35. Degree of reduction of oxygen is ______.
- [A] 2.
- [B] -2.
- [C] 6.
- [D] -6.
Answer: Option [B]
36. What is the degree of reduction of sulfur?
- [A] 2.
- [B] 4.
- [C] 6.
- [D] 8.
Answer: Option [C]
