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A thirteen-year-old girl, who is underdeveloped andthin, has a blood disorder. She frequently experiences chest andabdominal pain, fever, and coughing, and has trouble breathing. Herteachers often spend additional time with her, explaining conceptsthat the rest of the class is familiar with, as she tires veryeasily and is able to concentrate only for short spans of time.
Identify the blood disorder that she might be sufferingfrom.
Describe in detail the symptoms of this blood disorder.
Explain the difference in the cells of this girl and a personwho does not suffer from the disorder.
Assume you have achieved your dream and are now a prominent immunologist. One afternoon, while pondering which direction your research should take, you vividly remember the pain that the rusty nail incident caused.
Compare the recipes of nutrient agar and MacConkey agar. If an organism can grow on both media,on which would you expect it to grow better?
When a person's lungs are ventilated by a tank of gas, the technique is known as intermittent positive pressure breathing (IPPB). Analyzing this term, explain how this technique inflates the lungs for inspiration and deflates the lungs are expirat..
Normal cells greatly slow their rates of cell division after filling a culture dish with a layer that is one cell deep (a monolayer).
Explain the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells' abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis.
How do glucagon and epinephrine block fatty acid biosynthesis? How does insulin activate fatty acid biosynthesis? How does the chain undergo further lengthening after 16 carbons? Where in the cell does this occur? Specifically describe the enzyme ..
How do plant and animal cells metabolize energy in complementary ways? What does this suggest about the flow of energy and the recycling of elements through living organisms? Could we think of any other similar relationships.
The fish are cold-blooded while the cows are warm-blooded. Explain, in terms of assimilation efficiency and production efficiency, why more people can be fed from the fish than the cows (assuming similar amounts of algae/grass).
For a given reaction, G = -4 kcal/mole and the energy of activation for the uncatalyzed reaction = 5 kcal/mole. You add an enzyme, after which the activation energy falls to 3 kcal/mole. What is the energy of activation for the reverse reaction in..
Mutation can affect the genome in many different ways. For now, consider mutations that (1) result in changes of the third codon position, and (2) result in changes of the first codon position.
Determine what is it called when individual benefit is maximized by exploiting a resource to ruination?
The community structure of a habitat is defined by the interactions of the organisms that inhabit it. What is interspecific competition? What are two main types of interactions that occur in all communities? Provide one example of each type of rel..
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