You isolate a compound that is insoluble in water, has alternating single and double bonds, and has a bright orange
color. You correctly conclude that this compound is a:
a. protein.
b. nucleic acid.
c. polysaccharide.
d. steroid.
e. carotenoid.
e
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Erasmus Darwin, in his discussion of evolutionary possibilities, included all of the following EXCEPT
A. changes during the development of organisms. B. comparative anatomy of plants and algae. C. animal breeding by humans. D. vestigial organs.
A potent neurotoxin that causes paralytic shellfish poisoning in coastal temperate North America is produced by ________.
A. diatoms B. green algae C. dinoflagellates D. red algae
Which of the following is NOT true about the peacock butterfly?
A. The dark underside of their wings provides camouflage. B. The spots on the wings may resemble owl eyes, which help deter predation. C. The butterflies remain still when a predator is near so as not to draw attention. D. The rapid movement of their wings produces a hissing sound. E. A resting butterfly’s closed wing resembles a dead leaf.
Which phyla lacks a vascular system?
A. Arthrophyta B. Pterophyta C. Gnetophyta D. Hepaticophyta E. Ginkgophyta