GATE Environmental Microbiology: Microbial Metabolism – Previous Year Questions
17 GATE previous year questions on Microbial Metabolism (Environmental Microbiology, Environmental Science and Engineering) with answers and explanations, from every paper.
- GATE 2021 ES Q18 – What is the terminal electron acceptor in aerobic respiration?
- GATE 2021 ES Q45 – Select correct statements about Nitrobacter nitrifying bacteria.
- GATE 2021 ES Q48 – Select correct statements about glycolysis.
- GATE 2023 ES Q16 – Consider i Aerobic heterotrophs use organic matter for carbon and energy;ii They use CO₂ for both;iii Aerobic autotrophs use CO₂ carbon and reduced…
- GATE 2023 ES Q17 – For electron acceptors:i DO serves aerobic bacteria;ii Nitrite serves obligately aerobic bacteria;iii DO serves obligately anaerobic bacteria;iv…
- GATE 2023 ES Q32 – Glucose respiration has respiratory quotient1. Find the quotient for complete oxidation of fatty acid C 51H 98O 6,to two decimals.
- GATE 2023 ES Q37 – Which statement is NOT correct?
- GATE 2023 ES Q39 – Consider i Endogenous aerobic metabolism uses an electron acceptor inside cells;ii Its acceptor is DO;iii Endogenous metabolism is linked to…
- GATE 2023 ES Q55 – A reactor consumes all acetate in the reaction .125CH 3COO-+.0295NH 4++ .103O 2 .0295C 5H 7O 2N+.0955H 2O+.095HCO 3-+.007CO 2. Influent acetate is 1…
- GATE 2024 ES Q16 – Which conversion is nonsymbiotic nitrogen fixation?
- GATE 2024 ES Q43 – Match enzymes a Lactate dehydrogenase, b Alanine racemase, c Lipase, d Hexokinase with classes i Isomerases, ii Transferases, iii Oxidoreductases, iv…
- GATE 2025 ES Q15 – Which process is performed by autotrophic bacteria?
- GATE 2025 ES Q26 – For nitrification:(i) acceptor type differs between Nitrosomonas and Nitrobacter;(ii) predominant carbon source is organic matter;(iii) predominant…
- GATE 2025 ES Q38 – For microbial metabolism:(i) carbon use for cell synthesis is anabolism;(ii) during catabolism ATP is converted to ADP. Choose the correct option.
- GATE 2025 ES Q51 – Aerobic biomass yield on glucose is .4 g/g. Glucose has molecular weight 180 g/mol and biomass is C 5H 7O 2N with molecular weight 113 g/mol. With no…
- GATE 2026 ES Q17 – Which enzyme class cleaves C–C, C–O or C–N bonds by elimination to form double bonds or rings, or catalyzes addition to double bonds?
- GATE 2026 ES Q43 – Which statements about electron donors (ED) and acceptors (EA) in wastewater reactions are correct? Select all that apply.