Which of these structures is NOT derived from the neural crest?
a. bones of inner ear
b. cartilage of the face
c. cranial nerves
d. teeth
e. muscles
E
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All proinflammatory cytokines EXCEPT ________ induce fever at the systemic level
A) IL-4 B) IL-12 C) IL-6 D) IL-17
Photosynthesis evolved first in which of the following lineages?
a. Prokaryotes b. Archaea c. Eukaryotes d. Photosynthesis evolved simultaneously in all lineages
Which type of biome is depicted here?
A) deciduous forest B) coniferous forest C) tropical forest D) savanna
Which statement best summarizes the difference between ectothermic and endothermic organisms?
A) Ectotherms are warm-blooded, but endotherms are cold-blooded. B) Endotherms control their temperature, but ectotherms have no control over their temperature. C) Ectotherms absorb external heat, but endotherms use metabolic heat to maintain a warm, steady body temperature.