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You are working with a Gram positive bacterium that can be grown in Tryptic Soy Broth, a complex medium, or in a defined medium containing glucose, ammonium sulfate, potassium phosphate, ferric chloride, sodium phosphate and magnesium sulfate.
You suspect that the amount of iron in the defined medium would affect the growth rate. Describe an experiment you could do to test this hypothesis. Be sure to describe the growth conditions and the methods you would use to determine if iron affects the growth rate.
Explain an experiment that helped elucidate how dna is synthesized-in terms of identifying a protein important for the process.
Why are the protists a paraphyletic group, and what would need to change for them to be a monophyletic group?
Assume you want to evaluate kidney function in a 55-year¬-old, obese man with type II diabetes,and you ask him to collect his urine over a twenty-four hour period.
The U.S government has placed this strain of C.taxifolia on noxious weed list, which means that any possible source of the contamination of the weed will be highly restricted. Shipments that contain any kind of C.taxifolia and pass through an area wh..
Assayed for LDH activity were five uL of a sample that was diluted 6 to 1. The activity in the reaction vessel, which has a volume of 1 mL, is 0.10 U.
The D. melanogaster genome consists of approximately 1.7 x 108 base pairs. If DNA synthesis occurs at a rate of 40 base pairs per second, and the entire genome is replicated in 10 minutes, how many bidirectional origins of synthesis are required t..
Ovules from a pure-breeding yellow plant are fertilized with pollen from a pure-breeding green plant. All of the progeny are yellow. When the reciprocal cross is performed, all of the progeny are green.
Explain the processes involved in cellular protein synthesis. How would synthesis be affected by intake of an otherwise adequate diet that is very low in glycine or low in tryptophan?
You are given gamete frequencies for two genes (Aa and Bb) as follows: frequency of the AB gametes = 0.50, frequency of the ab gametes = 0.50, plus the map distance between the genes is 10 cM. Using that information, answer the following questions..
Determine which of the following could cause a reaction with a positive to become more favorable with respect to making product.
Biochemists make stock solutions of reagents and use them to make working concentrations of buffers. Explain how to construct these stock solutions. You decide on the final volumes and show your calculations
Determine what is the most common mechanism for repairing damage to DNA? Individuals with xeroderma pigmentosum inherit a faulty DNA repair mechanism.
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