Which of the following activities would be associated with the parasympathetic division of the autonomic nervous system?
A. resting and digesting
B. release of both acetylcholine and epinephrine
C. increased heart rate
D. "fight-or-flight" response
E. release of epinephrine only
A. resting and digesting
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Of the following plastids, which is not paired with the proper contents?
A) amyloplasts; amylase B) chromoplasts; non-chlorophyll pigments C) chloroplasts; chlorophyll D) proteinoplasts; protein E) elaioplasts; lipids
Competitive exclusion is the result of
a. mutualism. b. commensalism. c. competition. d. predation. e. parasitism
On which portion of the visual system is the image upside down and backwards?
a. cornea b. lens c. retina d. occipital lobe e. visual cortex
What best describes the tunic of a tunicate?
A. It is made of keratin, like human hair. B. It is made of chitin, like the shell of a crab. C. It is made of calcium carbonate, like the shell of a clam. D. It is made of cellulose, like the cell wall of a plant.