Plants have been shown to elicit defense responses upon recognition of part of the bacterial flagella, a structure important for bacterial locomotion. The flagella is likely to be sensed by
A. elicitors.
B. the product of an avirulence gene.
C. the product of a resistance gene.
D. hormones.
Answer: C
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Producers fix carbon from ____ through the process of ____
a. carbon dioxide; metabolism b. carbon dioxide; cellular respiration c. carbon dioxide; photosynthesis d. oxygen; photosynthesis e. oxygen; cellular respiration
Aristotle's lantern is a tooth-bearing structure of the
a. sea stars. b. tunicates. c. acorn worms. d. sea urchins.
Generation time in prokaryotes refers to the amount of time required for the doubling of the population through a single round of binary fission.
a. true b. false
Garrod first proposed that:a
metabolic defects were due to the lack of an enzyme. b. metabolic defects were due to excess enzyme production. c. metabolic defects were due to chromosomal changes. d. mutations were heritable. e. metabolic defects did not occur in humans.