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When calculating the concentration of bacteria in a liquid culture, you should plate multiple dilutions of your culture then count the colonies that develop on only one of those plates. The plate that you count should contain between 30 and 300 colonies. Should you avoid using plates with fewer than 30 or more than 300 colonies because some error in your technique led to those numbers of colonies, or because using fewer than 30 and more than 300 colonies can lead to an error in your calculations? Explain your answer.
Which of the following is NOT a good example of naturalselection?
Discuss in some detail the pros and cons of any one proposed means (other than irradiation) to decrease the prevalence of bacteria causing food poisoning in our commercial food supplies.
-protein x is a protein that is destined for secretion at the plasma membrane of one of our cells. show the cellular
In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+ thr+ and used to transduce a recipient of genotype cys- leu- thr-.
q1. the amount of bacteria in saliva samples were determined by collecting saliva making serial dilutions and
Which of the following is not paired with its function?
Discuss why are heterotrophic, autotrophic and mixotrophic protists not classified as plants or animals?
You repeat Snyder's experiment, but instead of determining the ability of each family member to taste PTC, you determine what alleles they carry: 2 PAV (PAV/PAV), 2 AVI (AVI/AVI),
Explain about health information systems and describe clinical information systems, management, strategic decision support, and e-health applications.
What part (or chemical aspect) of the bacteria will be altered when erythromycin is used?
Assume you have a stock solution with a concentration of 722g/L. You want to make one liter of solution with a concentration of 39g/L.
q. some prey form groups aggregate in the presence of a predator. one benefit of aggregation may result from defensive
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