A circulatory system that allows some mixing of oxygenated and oxygen-poor blood is indicated by the letter(s) ____
a. A only
b. B only
c. C only
d. A and B only
e. B and C only
ANSWER: b
Biology & Microbiology
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a. soredium b. arbuscule c. thallus d. sporangium e. haustorium
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What term describes individuals that are initially female, but may later become male or alternate between sexes through their lives?
a. homozygosity b. heterozygosity c. protogyny d. protandry
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In this reaction, ADH represents the
a. enzyme. b. substrate. c. product. d. activation energy. e. trigger.
Biology & Microbiology
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a. bacteria. b. protistans. c. dinoflagellates. d. all of the above.
Biology & Microbiology