Which of the following is a notable symptom of giardiasis?
A) "rice-water" stools
B) irritability and sleep disturbance
C) jaundice
D) foul-smelling "rotten egg" stools
E) dysentery
D
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The portion of a mushroom that you typically eat is
a. the fruiting body. b. the reproductive structure. c. the chytrid sac. d. both the fruiting body and the reproductive structure.
Which of the following includes the purple nonsulfur bacteria?
a. chemoautotroph b. chemoheterotroph c. photoautotroph d. photoheterotroph e. chemoautotroph and photoheterotroph
In a meristematic region, the cell plate during mitosis is perpendicular to the side of the stem. In what direction will the stem grow?
A) laterally in width B) vertically in height C) at a 45-degree angle from the ground D) away from the sun
Altruistic behavior is
a. selfish. b. sexually directed behavior. c. self-sacrificing behavior. d. aggressive behavior. e. nonreactive, such as freezing at the sign of danger.