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Mannitol Salt Agar, MSA, is used for growing Staphylococcus. The high salt concentration in the medium inhibits the growth of mostother genera. This medium is also useful because the pathogen, Staph. aureus, ferments mannitol and changes agar from redto yellow, while the normal flora, Staph. epidermis, doesnot change the color of medium. Is MSA a differential medium or aselective medium or both or neither? Explain.
what is meant by increasing levels of organization in anatomy & physiology? What are the different levels & how do they relate to each other? What are examples for each level?
The citric acid cycle evolved from preexisting metabolic pathways. Evidence includes organisms that do not use the citric acid cycle, but have genes coding for enzymes used in the citric acid cycle
How is the segmentation in annelids different that the segmentation in tapeworms? (Hint: think about their structures that go across or through segments. Which group do you find those in?)
Suppose your cousin has decided to begin breeding owls. She does some research and finds out that a single gene controls feather color.
Scalloped (sd) wing is an X-linked recessive and ebony (e) body color is an autosomal recessive mutation in Drosophila. What proportion of scalloped, normal body colored males is expected in the F2 starting with a true breeding scalloped female wh..
A genetic mutation occurs that alters the specificity of theGolgi enzyme that phosphorylates mannose residues in theoligosaccharides of glycoproteins. The effect of the mutation issuch that the enzyme now indiscriminately and randomlyphosphorylate..
Describe what would be the specific probable effects on the cell if each of these organelles were lost. Try to avoid picking the same pair as other students in your class.
What is the basic theory of biological evolution and what evidence is there to support this theory? Describe the two scientific models for evolution.
Give one example of humans evolving over the past 10,000 years. Explain why and how evolution is take place?
Estimate the value of the turnover number of the enzyme invertase, given that Rmax (Vmax) for invertase = 15.8 mmol·L-1·min-1 and [E]t = 4.8 ?
Since the invention of the first vaccine in the 1700s, there has been controversy whenever a new vaccine is introduced. Are they safe explain your answer.
Is there any bacteria other than proteus, morganella & providencia which is Phenyl alanine deaminase test +ve?
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