Environmental Microbiology For Year Four Students

ELIZADE UNIVERSITY,ILARA-MOKIN, NIGERIAFACULTY: BASIC & APPLIED SCIENCESDEPARTMENT: BIOLOGICAL SCIENCESCOURSE TITTLE: ENVIRONMENTAL MICROBIOLOGYQUESTIONSla. State the role played by methanogens and methanotrophs in the carbon cycleGive examples of two microorganisms involved in each of the two steps in nitrificationWhy is nitrogen fixation important? (ii) Write the equation showing the reactants and the products in nitrogen fixation and list two free-living and two symbiotic microorganisms that fix nitrogend. Differentiate between the following: (i) Biodegradation and bioremediation(ii) Bioaugmentation and Bio-stimulationState any two (2) detoxification strategies used by microorganisms to counter the toxic effects of heavy metals27032578408195Enumerate any three (3) important functions of Plant Growth Promoting Rhizobacteria (PGPR)(i) Differentiate between acquired and intrinsic recalcitrance(ii) Highlight 2 possible reasons for intrinsic recalcitrance2a. Explain briefly the neuston microbiota with relevant examples of microorganismsb. Discuss the fresh water microbial communities.3a. Explain any three (3) factors limiting growth of microorganisms in waterb. Discuss turbidity as a physical factor in fresh water bodies.4a. Explain any three (3) sources of air pollutionb. Discuss the microbiological qualities of air in any two (2) different environments