Hypothyroidism can be caused by a dietary deficiency in ____.
A. vitamin D
B. multivitamins
C. Penicillin
D. thyroxin
E. iodine
Answer: E
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Which of the following organisms is the causative agent of Hansen's disease (leprosy)?
A. Pseudomonas aeruginosa B. Mycobacterium avium C. Mycobacterium leprae D. Mycobacterium smegmatis
A scientist is interested in doing a research project on hemoglobin. From which one of the following could he extract the hemoglobin for his study?
A) globulins B) white blood cells C) platelets D) clotting proteins E) red blood cells
After estimating a logit model for the likelihood of a website visitor clicking through conditional on if the visit occurred on a weekday or not, you get the following results: ClickThroughi = -1.2(0.4) + 0.8(0.2)WeekDayi, where standard errors are reported in parenthesis. What would be the calculation that yields the marginal effect of a visit moving from a weekend to a weekday on click-throughs?
A. 0.8
B. 
- 
C. 
D. -1.2 + 0.8 = -0.4
Which statement best describes the role of the megaspore in angiosperm reproduction?
A) The megaspore produces the egg-containing embryo sac. B) The megaspore develops into a seed. C) The megaspore develops into the anther. D) The megaspore produces pollen grains.