130. A bioremediation mesocosm experiment has been carried out on a plot with 250 ppm aromatic molecules as contaminants. After 15 days the level of aromatic molecules came down to […]
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DBT BET JRF 2018 Previous Year Questions and Video solution
Biogas Composition from Anaerobic Digestion of Food Waste with Inorganic Ions
129. A mixture of food waste on inorganic analysis was found to contain Cl- , SO4 – , NO3 – , NH4 + ion. Successful anaerobic digestion by a mixed […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Exploring Marine Microorganisms: Hunting for Useful Genes in “Viable but Non-Culturable” (VBNC) Organisms
170. Due to the difficulty of isolating and culturing, many marine microorganisms are regarded as “viable but non-culturable” (VBNC). Which one of the following is a suitable method to hunt […]
DBT BET JRF 2018 Previous Year Questions and Video solution
itle: Estimating Respiratory Particulate Matter from Air Sample Data
128. In an air sample, 12% particulate matter is of around 25 nm size, 35% around 10 nm, 30% around 5 nm and remaining are 2.5 nm or smaller. The […]
DBT BET JRF 2022 Previous Year Questions and Video solution
The Impact of HIV on the Immune System: Understanding AIDS and Its Effects on T-Lymphocytes
169. AIDS is caused by a human retrovirus that kills: A. B lymphocytes B. Lymphocytes stem cells C. CD4-positive T-lymphocytes D. CD8-positive T-lymphocytes Introduction AIDS (Acquired Immunodeficiency Syndrome) is a […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding Size Exclusion Chromatography: Elution Behavior of Proteins
168. Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: In size exclusion chromatography, larger proteins elute earlier […]
DBT BET JRF 2018 Previous Year Questions and Video solution
: Identifying Microbial Communities in Anaerobic Starch Fermentation
127. A microbial community has grown on starch anaerobically and it produced a mixture of metabolites with the following composition: glucose, disaccharides, acetate, butyric acid, butanol and carbon dioxide. This […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding the Biogenesis of Rubisco: The Role of the Large and Small Subunits
167. Given below are two statements: Statement I: Large subunit of rubisco is encoded by chloroplast genome while small subunit of Rubisco is encoded by nuclear genome Statement II: Small […]
DBT BET JRF 2018 Previous Year Questions and Video solution
Calculating Remaining BOD in Wastewater After Partial Aerobic Oxidation
126. A wastewater sample has COD of 1 g/L of which 80% is the BOD. During partial aerobic oxidation only 200 mg of COD was converted to CO2 and H2O. […]
DBT BET JRF 2022 Previous Year Questions and Video solution
Understanding the Limitations of the Double Reciprocal Plot for Determining Vmax and Km
166. For determining 𝑉𝑚 and 𝐾𝑚 of an enzyme catalyzed reaction, we often use a double reciprocal plot of 1/v versus 1/s. This is NOT the best method because: A. […]
