Both fish and humans develop neurological symptoms and bloody skin lesions due to a sudden "bloom" of this algae.
A. diatoms
B. Prototheca
C. Phaeophyta
D. Pfiesteria piscicida
E. All of these choices are correct.
Answer: D
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You are an attending physician supervising a new resident. Together, you decide to treat a patient with a steroid drug. The resident administers the drug and watches the patient anxiously. "It's not working," he mutters. How do you respond?
A. "You're right, it doesn't seem to be working. Let's increase the dose, since we need to achieve high steroid levels in the blood." B. "Why don't you go on your rounds and come back? Steroid hormones need several hours to work, since they regulate gene expression. Transcription and translation take time." C. "We forgot to administer the carrier protein to get the drug across the cell membrane. We can add that now." D. "Let's grab a cup of coffee and then check again. Activating the G-protein coupled receptor and its downstream kinase cascade can take several minutes." Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about hormones? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following types of cell cleavage is found most often for deuterostomes?
a. radial, indeterminate cleavage b. spiral, determinate cleavage c. radial, determinate cleavage d. spiral, indeterminate cleavage
Assume short hair (L) is dominant to long hair (l), and black hair (B) is dominant to brown (b). If you
found a black, short-haired animal, you could determine its genotype by crossing it to an animal with a genotype of a. LL BB. b. ll BB. c. ll Bb. d. ll bb. e. LL bb.
In a survey of Dall mountain sheep in Denali National Park in Alaska, researchers found that wolves preyed primarily on the most vulnerable members of the population, the young and the old. What conclusion is best supported by this data?
A. Dall mountain sheep in Denali are an r-selected population. B. A program should be established to cull the wolf population. C. A program should be established to cull the sheep population. D. Wolf predation is not dramatically reducing the sheep population. E. The wolf population is at its carrying capacity, so it is no threat to the sheep population.