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A 20 year old female presents to your emergency service with severe head trauma from a fall. An MRI reveals swelling of her brain, but no sign of hemorrhage. You determine that removing 100 ml of intracellular fluid from her brain will greatly relieve the increasing intracranial pressure. Assuming she was isotonic upon presentation, what osmolarity would you need to achieve in her body to accomplish this? She weighs 60 kg and assume that her brain weighs 3 kg and is 70% water. 2) What volume of 10% mannitol would you need to add to get her to this osmolarity? The molecular weight of mannitol is 182.
If a disease is co-inherited with a certain allele of a genetic marker in a pedigree, what does this suggest about the location of the disease gene with respect to the marker?
What would be the effect of the same analogue on signal transduction of an epithelial cell after exposure to epidermal growth factor (EGF)? How would this compare to the effects of the cholera toxin on these same cells.
How may this capacity be an advantage to the cell.
Mutational changes were induced in a single codon in the gene of T4 phage. The following amino acid substitutions were observed. By following the base changes in the codons, determine the codon for each mutant.
Hematocrit values may be estimated from hemoglobin values by multiplying the hemoglobin value by three. Discuss how do the actual hematocrit values of your sample compare with the computed value obtained from the hemoglobin concentration?
Chimpanzees have 24-pairs of chromosomes. Chimpanzee somatic cells contain DNA double helices.
MacConkey Agar gives two results: growth and color change. What does each of the two results tell you about the characteristics and/or biochemical abilities of the organism being tested?
A geneticist makes a cross between two homozygous strains of maize with three different mutations. For symbols, you can use a capital to indicate the dominant allele.
Suppose that transgenic organisms can be developed to speed nitrogen fixation. How might use of these organisms affect ecosystem.
Imagine a rabbit. A conejo. Its coat color is controlled by several loci, among them the C locus. C has several alleles; three of them are: C = full color ("chestnut agouti"), cch = chinchilla; c = albino. C is dominant to cch or c; cch is dominan..
Begin by distinguishing between osmosis and diffusion; how are they similar? In what ways are they different?how to utilize transport substances across the cell.
What are the major adaptations of amphibians, birds, reptiles and mammals? What are the dissimilar types of animals in these groups? Anmiotic egg,plastron, carapace, snake, lizard, turtle, feathers How did jaws evolve.
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