Human chorionic gonadotropin stimulates the corpus luteum to secrete
a. FSH.
b. LH.
c. testosterone.
d. progesterone.
e. estrogen and progesterone.
E
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The effect of nitrification is to:
a. convert ammonia into nitrates b. reduce nitrates to nitrites c. convert nitrogenous compounds into free nitrogen d. mimic nitrogen fixation e. convert nitrates to organic nitrogen
8. _____ refers to all of the chemical reactions that occur within the cells of living things
Metabolism Cellular respiration Homeostasis Reproduction
What does the endosymbiont theory explain
What will be an ideal response?
De Queiroz's general species concept is receiving significant support because
A. it includes morphology, reproductive isolation, DNA sequences and ecology to determine if a population of group of populations is distinct form other groups. B. multiple criteria are used. C. many scientists believe it is not valid to have so many different species concepts. D. it concurs with evolutionary lineage concept. E. all of the above are correct.