1. When an integrated F plasmid leaves the chromosome it may take some chromosomal genes from one side of the integration site and it results in F\' cells. Integration of F plasmid into the host chromosome results in Hfr (High frequency of recombination) cells 2. Genetic transfer in Archaea is by means of horizontal gene transfer where genes can be transfered from one to other similar to bacteria conjugation or transduction. 3. Methanogenesis is the formation of methane by the methanogens. Methanogenesis actually complete the decomposition process. The semi-final products of decomposition like carbon dioxide, small organics and hydrogen are completely removed. If methanogenesis does not happen, it leads to accumulation of carbon in anaerobic envrionment. Methanogens belong to group archaea. 4. To resist high temperatures in the environment, bacteria convert all its unsaturated fatty acids in the membrane to saturated fatty acids. It prevents the denaturation of enzymes and proteins in the cell. 5. Methanogenesis takes place in Anaerobic condition because oxygen inhibits the growth of methanogens. Solution 1. When an integrated F plasmid leaves the chromosome it may take some chromosomal genes from one side of the integration site and it results in F\' cells. Integration of F plasmid into the host chromosome results in Hfr (High frequency of recombination) cells 2. Genetic transfer in Archaea is by means of horizontal gene transfer where genes can be transfered from one to other similar to bacteria conjugation or transduction. 3. Methanogenesis is the formation of methane by the methanogens. Methanogenesis actually complete the decomposition process. The semi-final products of decomposition like carbon dioxide, small organics and hydrogen are completely removed. If methanogenesis does not happen, it leads to accumulation of carbon in anaerobic envrionment. Methanogens belong to group archaea. 4. To resist high temperatures in the environment, bacteria convert all its unsaturated fatty acids in the membrane to saturated fatty acids. It prevents the denaturation of enzymes and proteins in the cell. 5. Methanogenesis takes place in Anaerobic condition because oxygen inhibits the growth of methanogens..