What molecules do group I introns require for autosplicing?
What will be an ideal response?
Ans: The autosplicing reaction for group I introns requires two metal ions and a guanine nucleotide cofactor with a 3?-OH end.
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During which process does an arthropod strip off its outer cuticle?
a. egestion b. molting c. ecdysis d. exodysis
Four of the five choices listed below can be used to
describe fungal life. Select the exception. a. heterotrophic b. saprobic c. parasitic d. decomposer e. autotrophic
Prions can be transmitted by all of the following except
A. surgical instruments. B. cornea transplants. C. ingesting meat from infected animals. D. ingesting brain material. E. All of the choices have been documented as methods of prion transmission.
Once they are identified, ____ take priority in worldwide conservation efforts.
A. healthy ecosystems B. riparian zones C. hot spots D. grasslands E. forests