What is the difference between generalized and specialized transduction? Give an example of specialized transduction
What will be an ideal response?
In generalized transduction, any gene or set of genes on the chromosome may be transferred from the donor bacterium to the recipient bacterium. In specialized transduction, only specific genes may be transferred. This is mediated by temperate phages in which prophages associate with only one site of the bacterial chromosome. For example, the ? genome integrates into the E. coli bacterial chromosome at a specific site between the gal region and the bio region, called att ?. By abnormal excision of the prophage from the host chromosome, gal or bio genes may be transferred to other bacterial cells.
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Which type of receptor is membrane-associated? (Select all correct choices.)
A. G protein-coupled receptor B. receptor kinase C. ligand-gated ion channel D. nuclear receptor
Which of the following are living representatives of the first plant lineages to diverge after plants moved onto land?
A. angiosperms B. gymnosperms C. ferns D. bryophytes E. lycophytes
Phagocytosis (Phagotrophy) is:
A. attack of cells by bacteriophages B. the phases through which cells pass during division C. the disintegration of a cell D. the attachment of protist cells to a substrate E. the capture of food particles by a cell
Grasshopper mice are resistant to exhibiting pain from scorpion stings. This is due to the scorpion venom the action potential in the pain receptors.
A. activating B. inhibiting C. reestablishing D. speeding up E. slowing down