For individuals planning a trip to another country, such as Vietnam, which organization is the best source for information on which vaccines might be necessary?
a. Centers for Disease Control and Prevention
b. National Institutes of Health
c. National Safety Council
d. Tourist Travel Bureau
Answer: A
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You want to know whether cookies made with unbleached flour taste better than cookies made with bleached flour; which of the following has the strongest experimental design to test this question?
A. Make two batches of cookies, one with bleached flour and one with unbleached flour; one taster tries both types and ranks which type they like best. B. Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types and rank which type they like best. C. Make two batches of cookies, one with bleached flour and one with unbleached flour; twenty tasters try both types without knowing which ones they are eating and rank which type they like best. D. Make two batches of cookies, both with bleached flour; one taster tries both types and ranks which type they like best.
What type of microscope uses magnetic lenses to bend beams of electrons?
a. compound microscope b. confocal microscope c. scanning electron microscope d. transmission electron microscope e. light microscope
Nicotine synthesis is a(n) adaptation of plant chemical defense against insects. Indicate whether the statement is true or false
Which is an accurate statement about the anatomy of the human excretory system?
a. Bowman's capsule is a network of capillaries inside the glomerulus. b. The proximal tubule is the portion of the nephron tubule farthest from Bowman's capsule. c. The renal cortex, which contains the nephrons, is interior to the renal medulla. d. The loop of Henle is located between the proximal tubule and the distal tubule. e. The distal tubule of a nephron connects with the renal pelvis of the kidney via the ureter.