Which of the following has no effect on the outcome of the host-parasite relationship?
A. The virulence of the parasite
B. The number of parasites on or in the host
C. The defenses of the host
D. All of the choices are correct.
Answer: D
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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.
Where are chondrocytes and osteocytes located?
A. In muscle B. In plasma C. In lacunae D. In bone E. In cartilage
Which solutes move into plant root cells is determined by ________
a. active transport b. passive transport c. diffusion of the solutes in the same proportion as they are present in the soil d. chance
Salt marsh plants differ from seagrasses in that they:
a. are not fully marine plants. b. require freshwater to reproduce. c. are intolerant of full strength seawater. d. are found throughout the world. e. have roots, while seagrasses do not.