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Assume you ingest 20 cells of Salmonella typhimurium in a chicken taco. Some of the bacteria are killed as they pass through the stomach but 10 viable cells survive and reach the intestine. Suppose further that the sum total of subsequent bacterial replication and death (caused by host immune mechanisms) produces an average generation time of 2.7 hours and that you will feel sick when there are 1,000,000 bacteria in your gut. How much time will elapse before you feel sick? Show your work.
Determine the proportion of the lung cancers attributable to smoking among: smokers and the whole population.
select a chromosomal disorder from the March of Dimes Foundation Website.
Examine the major stages of sea urchin development with reference to your series of detailed drawings and observational notes. How did the embryonic cells compare in size with the original gamete cells? State reasons such a difference may exist.
Describe the process of muscle contraction and how a neuromuscular blocking agent, such as metubine, would interfere with muscle contraction.
The phosphate system serves to buffer intracellular fluid of cells at physiological pH because pK2 (7.20) lies near the normal pH range of 6.9-7.4. If the total cellular concentration of phosphate is 19mM and the pH is 6.9, what is the concentrati..
Choose one biotechnology example, such as agriculture, medical or historical, and provide at least two ways use of this biotechnology could benefit society and two ways this biotechnology could be harmful.
A student argued that this is too time-consuming as the complete amino acid sequence should be determined in order to create the probe. Does the student have a valid argument? Why or why not with reason.
The standard reduction potential (Eo') for the reduction of fumarate is +0.03V. The Eo' for the reduction of FAD in a given protein that accepts the electrons from succinate is -0.40V. Given the reaction.
What is the significance of adenine, thymine, guanine, and cytosine in the structure of a DNA molecule.define how these four nucleotides bond.
Compare and contrast gene expression in prokaryotes vs. eukaryotes from the standpoint of promoter sequences
What would happen to heart rate and peripheral resistance? Would it be probable to build a working circuit without the inhibitory interneuron? If so, how would you do it? If not, why can't you do it.
I n tomatoes, two alleles of one locus determine the character difference of purple versus green stems
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