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Questions -
1. Think about the advice given in the procedure to test a known oxidase-positive organism along with an unknown.
A) Is this a positive or negative control?
B) What information is provided by the results?
2. Think about the 20-second time limit on the oxidase test.
A) What happens to the oxidase reagent after 20 seconds?
B) Does this "reaction" only happen after 20 seconds? If not why is a 20 second limit set?
3. Provide a possible explanation as to why the phenlenediaminine reagent reduces cytochrome oxidase and not other oxidases.
Discuss the differences you have noticed between old and new Food Pyramid. Provide your opinion if you believe new Food Pyramid will be successful in modifying the eating habits of Americans or not.
Assume you are working in a winery. You just determined that a wine sample contained 3.0 × 108 yeast/ml by analyzing its turbidity.
Discuss how medical technologies are evaluated. Give examples of at least two evaluation methods that have been discussed either in popular press or scholarly journals.
Explain how it was possible to insert a polylinker into the 5' end of the beta- galactosidase gene without losing biological function. Also explain why biological function is almost always lost when a DNA fragment is ligated into a cut polylin..
explain the advantage and disadvantage of random addition or deletion of nucleotides at VDJ junctions during re-arrangement of immunoglobulin gene segments.
What is the 'carrier' which picks up the hydrogen stripped from the pyruvates in the Krebs cycle? What is the original source of these H's? What is their ultimate destination? Give two other names for the Krebs Cycle.
Use knowledge of biological principles and the scientific method to ask relevant questions, develop hypotheses, design and conduct experiments
What unlikely event must happen in Metaphase I for a human egg to receive only maternal chromosomes? Would that egg develop into an exact replica of its mother? Discuss the function of the respiratory system.
What are the carbon backbone structures of the amino acids that give rise to: pyruvate, acetyl CoA, or TCA intermediates?
1.why is diversity important in maintaining the stability of an ecosystem?2.what is the broadest level of ecological
the hivacquired immune deficiency syndrome aids epidemic is fueling a widening and increasingly deadly famine in
explain different methods of genetic counselling
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