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Based on your research and readings, respond to the following:
1) Why is it important to have a pure culture and not a mixed culture when performing biochemical tests?
2) How does culturing an organism on several different types of media can help identify an organism in a relatively short period of time?
3) What is the technique used to isolate pure cultures from a specimen that contains mixed flora? Describe the technique.
4) What are the characteristics by which bacterial colonies may be distinguished? Describe at least four such characteristics.
The human body is truly remarkable and is designed to function effectively. Organs are important structures composed of different tissues that facilitate specific functions within the body.
Which factor is more important in controlling the mean residence times and pools of nutrients in soil organic matter in terrestrial ecosystems, the rate of input (i.e., primary productivity) or the rate of decomposition?
Conditional lethal mutations are very useful in genetic and biochemical analyses of complex processes such as DNA replication. Temperature sensitive mutations, which are one form of conditional lethal mutation.
In a co-evolved predator-prey relationship, does predation rate operate under directional selective pressure or stabilizing selective pressure?
what are some of the methods that scientists have used to study the components, processes, and outcomes of cell division?
1 why are enzymes critical to the function of cells? that is why not simply let chemical reaction occur without
discuss the applications of each of following in biology today and include three examples of each with a brief
q1. when stained with the giemsa dye human mitotic chromosomes show a characteristic pattern of light and dark bands.
Darwin found that the faunas and floras of oceanic islands tend to be impoverished and unbalanced when compared to those of continental islands. Explain what this means (2) and provide examples of this difference (1). Outline the evolutionary expl..
Describe the "optimal" conditions for photosynthsis. What climate conditions favor plant growth ?
Allolactose is the inducer in the wild-type lac operon, in nature. However, in the experiment IPTG was the inducer. Why is it important that IPTG is not metabolized?
You cross different Hfr strains with F- strains. You receive following orders of gene transfer.
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