1
ICAR JRF Microbiology 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1

Read the following statements regarding bioremediation

(A) . Aerobic biodegradation of PCBs is mainly carried out by the white rot fungus, Phanerochaete and by Acinetobacter and Alcaligenes.
(B) . Methylococcus capsulatus can convert chloro- and bromo methane to formaldehyde, dichloro- and trichloro methane to CO? while growing on methane.
(C) . In most cases, pesticides that are cometabolized are completely degraded, hence cometabolism of a pesticide is always good from an environmental standpoint
(D) . Burkholderia dechlorinates the pesticide 2, 4, 5-T aerobically by using oxygenase enzymes and release chloride ion (Ch).
(E) . Reductive dechlorination is less important than oxidative dechlorination from ecological standpoint.

Choose the correct answer from the options given below:

2
ICAR JRF Microbiology 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1
Microorganisms transform mercury (Hg) by the process of methylation yielding methylmercury (CH3Hg"). Which of the following is correct regarding toxicity of methylmercury?
3
ICAR JRF Microbiology 29 Jun 2024Shift 1
Statement Based +4 −1

Given below are two statements

Statement (I) : Bardenpho process of waste water treatment consists of one aerobic and one anoxic tank with two sludge settling tanks
Statement (II) : Bardenpho process helps to remove nitrogen and phosphorus from waste water.

In light of the above statements, choose the most appropriate answer from the options given below.

4
ICAR JRF Microbiology 29 Jun 2024Shift 1
Statement Based +4 −1

Given below are two statements

Statement (I) : The bacterium Burkholderia dechlorinates the pesticide 2,4,5-T under anoxic conditions, releasing chloride ion (Cr). The reaction is catalyzed by reductase enzymes
Statement (I) : Following dechlorination, a dioxygenase enzyme breaks the aromatic ring to yield compounds that can enter the citric acid cycle and yield energy.

In light of the above statements, choose the most appropriate answer from the options given below.

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General Agriculture

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Agronomy, Tillage & Field Crop Production Cell Biology, Plant Physiology & Biochemistry Agricultural Entomology, Nematology & Crop Pr Agricultural Meteorology & Climate Science Soil Science, Plant Nutrition & Reclamation Crop Genetics, Plant Breeding & IPR

History of Microbial World

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Microbial Secondary Metabolism, Industrial En Amino Acids, Peptides, & Proteins Cell Structure, Biomembranes, & Bioenergetics Carbohydrates & Lipids Plant Cell Architecture, Organelles, Cytoskel Bacterial Motility Systems Chemolithotrophy, Iron/Sulfur Oxidation & Arc Ascent of Sap, Transpiration, Stomatal Mechan Recombinant DNA Technology, Cloning Vectors, Plant Genetic Transformation, Transgenics, Central Dogma, DNA Replication Machinery & Re Nitrogen Fixation Biochemistry Soil Microbiology Pioneers Microbial Taxonomy, Bergey's Manual Systems Bacterial Cell Envelope Bacterial Endospores Historical Milestones, Spontaneous Generation

Basic Microbiological Techniques

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Spectroscopy, Mass Spectrometry, & Radioisoto Wastewater Treatment , Xenobiotics & Pesticid Active Molecular Microbial Ecology Biomining, Bioleaching of Sulfide/Gold Ores Essential Plant Nutrients DNA & RNA Structure, Replication, & Repair Cell Cycle Regulation, Checkpoints, Signal Tr Microbial Interspecies Interactions Prokaryotic & Eukaryotic Cell Architecture, O

Microbial Genetics

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DNA Sequencing Technologies, High-Throughput Antimicrobial Susceptibility Testing, Disc Di Food Safety Systems, HACCP Principles, Milk Q Lipid Metabolism, Beta-Oxidation, & Ketone Bo Abscisic Acid, Ethylene, & Jasmonates Auxins & Cytokinins Molecular Marker Systems, Genetic Diversity Electrophoresis, Centrifugation, Chromatograp Culture Media Formulations, Pure Culture Isol Carbohydrate Metabolism Fermentation Technologies, Bioreactor Kinetic

Microbial Physiology

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Mineral Nutrition, Nitrogen Fixation, & Assim Plant Transformation Systems Enzyme Classification, Kinetics, Inhibition Seed Germination, Seed Vigour & Physiological Seed Development, Reserve Mobilization, & Des Transgenic Crop Technologies, Biofortificatio DNA Repair Pathways, Ribosomes & Catalytic RN

Soil Microbiology

9 Topics
Coenzymes, Isozymes, & Vitamins Nitrogen, Sulfur, & Lipid Metabolism & Assimi Bacterial Replication Timing, Plasmids, Incom Plant Genome Organization, Organellar DNA, Gene Concept, Split Genes, Overlapping Genes Plant Respiration, Glycolysis, TCA Cycle, & A Chemical Mutagenesis, Base Analogs, Deaminati Bacteriophage Biology, Transpositional Phage Two-Component Regulatory Systems, Osmoregulat

Microbial diversity & Ecology

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Amino Acids, Protein Folding, Heat Shock Prot Symbiotic Associations Drought & Water Deficit Stress Physiology & O Photoperiodism, Phytochromes & Floral Inducti Haploids, Embryo Rescue, Protoplast Fusion Soil Microbial Biomass, Soil Health Indicator Carbon Biogeochemistry, Cellulose Digestion Soil Sulfur & Phosphorus Dynamics Soil Nitrogen Transformations
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