Tag: DBT JRF PYQ-2023

40. Which of the following processes turn-on and turn-off the alpha subunit of a heterotrimeric G protein? 1. Binding to GDP; exchange of bound GDP with GTP 2. Binding to […]

39. Which of the following wavelengths of light are perceived by zeitlupe photoreceptor? 1. Only UV-B 2. Only Blue light 3. UV-A and Blue light 4. Red and Far-red light […]

38. What is true about similarity and homology between protein sequences? 1. Similarity and homology mean the same 2. Similarity is a mathematical term 3. Homology is a mathematical term […]

37. Which of the following can be used for discovery of unknown conserved motif/s in a given set of DNA/protein sequences? 1. BLAST 2. PHYLIP 3. CLUSTAL 4. MEME Discovery […]

36. Which one of the following organisms is most likely to be the cause of pneumonia in an immunocompetent infant? 1. Nocardia asteroids 2. Serratia marcescens 3. Mycoplasma pneumonia 4. […]

35. Match List I with List II LIST I (bacterial products)                                        […]

34. Which of the following statements is most appropriate with regards to the primary and secondary antibody responses? 1. The IgM made in the primary response is made primarily by […]

33. An alternate form of starch biosynthesis machinery in cereal endosperm involves 1. Plastidic ADP-glucose pyrophosphorylase 2. Cytosolic ADP-glucose pyrophosphorylase 3. Plastidic UDP-glucose pyrophosphorylase 4. Cytosolic UDP-glucose pyrophosphorylase Alternate Starch […]

The telomerase enzyme has the following activity 1. DNA-dependent DNA Polymerase 2. RNA-dependent DNA Polymerase 3. DNA-dependent RNA Polymerase 4. RNA-dependent RNA Polymerase   Telomerase Enzyme and Its Activity Introduction […]

31. The antigen-binding site on antibodies is formed primarily by: 1. The hypervariable regions of both H and L chains 2. The hypervariable region of H chains only 3. The […]