The resistance to re-infection with the measles virus following recovery from the measles is:
a. artificial immunity (adaptable)
b. innate immunity
c. active immunity
d. passive immunity
Ans: a. artificial immunity (adaptable)
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Scientists found that different beak shapes correlate with different mating songs in Darwin's finches. Which hypothesis does this support?
A. Darwin's finches are not different species according to the Biological Species Concept. B. Adaptation to different food sources led to behavioral isolation in Darwin's finches. C. Mating songs are primarily determined by the acoustics of different beaks. D. Adaptation to different food sources likely occurred after reproductive isolation in Darwin's finches. 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 reproductive isolation? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Diabetes mellitus results from a disorder of glucose uptake by systemic cells and can result in a number of symptoms including high levels of blood glucose and the presence of glucose in the urine . Which of the following is a reasonable explanation for the presence of glucose in the urine?
A. The reabsorption capacity of the kidney for glucose is exceeded. B. A lack of sodium in the filtrate blocks the function of the Na+/glucose symport protein. C. High levels of glucose interfere with ADH function. D. The high levels of glucose induce a "dehydrated" state that promotes production of a large amount of dilute urine. E. None of the choices given are a logical explanation for this observation.
Four of the five answers listed below are conditions caused by chromosomal nondisjunction. Select the
exception. a. Down syndrome b. Huntington's disorder c. Turner syndrome d. Klinefelter syndrome e. trisomy 21
Copernicus, Galileo, and Darwin found that ____ caused their science to be controversial.
A. prevailing belief B. objective data C. astronomical theories D. supernatural influences E. experimental design