How do electrons gain energy in photosystem i? a. they take energy from the atp molecules b. they absorb photons. c. they use energy from a hydrogen ion pump d. they use energy in the form of glucose.

Which of the following is not true of the formation of a bacterial translation initiation complex? a. if-3 binding to gtp is required for the charged trna to associate with the first mrna codon. b. n-formylmethionyl-trnafmet binds in the p site. c. if-1, if-2, and if-3 dissociate upon the 50s subunit binding. d. the 30s ribosome associates with the mrna before the 50s ribosome.