When comparing specialist species with generalist species, it may be said that
a. generalist species will survive in fewer habitats than specialist species.
b. generalist species are at a disadvantage when comparing niches.
c. generalist species will most likely be at an advantage when it comes to adaptation in
situations where the environment is changing.
d. specialist species have a more diverse nutritional source list.
e. specialist species exhibit a broad range of habitats.
C
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Which of the following statements about agricultural fertilizers is false?
A. Global nitrate and phosphate resources are in decline. B. Large amounts of fertilizers are necessary to maintain high crop yields year after year. C. Nitrate and phosphate runoff cause eutrophication in different communities. D. Phosphates are obtained exclusively through mining. E. If the human production of fixed nitrogen stopped, the amount of fixed nitrogen added to the biosphere each year would only be about half of what it is now.
You are a professor supervising first year medical students. One student is examining the adrenal gland of his cadaver. "Wow!" he exclaims, "This person must have had an endocrine problem. Their adrenal gland lacks any kind of duct connecting it to the bloodstream. The hormones could only have oozed out." How do you respond?
A. "That makes their adrenal gland similar to an exocrine organ." B. "Do you see signs of adrenal insufficiency, such as low fat stores or muscle degeneration?" C. "That's normal. The hormones ooze out and diffuse into nearby capillaries, which is why endocrine glands are sometimes called 'ductless glands'." D. "Look carefully and you will see the nerves that transport the hormones into the bloodstream." 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 adrenal gland? 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?
The work of Reznick and Endler with guppies
shows all of the following EXCEPT that a. life history traits can be inherited. b. life history traits evolve. c. life history traits can be altered over a short period of time. d. predation does not influence the modification of life history traits. e. life history traits are coded for in DNA.
A doctor is treating a patient who has some form of anemia. First, the doctor tries to give the patient extra vitamins that contain iron, to no effect. There is no evidence of lead poisoning
The doctor tries an injection of vitamin B12, and the anemia is under control. What type of anemia did the patient have? A) iron-deficiency anemia B) sickle-cell anemia C) pernicious anemia D) hemorrhagic anemia