The one-gene/one-enzyme hypothesis was proposed by
A. Griffith.
B. Franklin.
C. Beadle and Tatum.
D. Watson and Crick.
E. Garrod.
Answer: C
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_____ trigger immune responses
a. Cytokines d. Antigens b. Lysozymes e. Histamines c. Immunoglobulins f. all of these
A plant with two seed leaves is
a. a monocotyledon. b. a dicotyledon. c. exemplified by corn. d. a dihybrid.
The nervous system develops from endoderm
____________________ Indicate whether the statement is true or false.
Which is incorrect about deep-sea organisms?
A. Some prokaryotes are photosynthetic there. B. Some prokaryotes live symbiotically within the tissues of heterotrophs that live there. C. Some prokaryotes extract energy from hydrogen sulfide. D. Some heterotrophic organisms obtain energy from debris that falls from above.