試題詳解

24. Energy balance in the cell (ATP/ADP/AMP levels) is an important factor in the metabolic pathways we have studied. How does this regulation take place?
(A) ATP, ADP and/or AMP bind to DNA to modulate transcription of genes for enzymes involved in metabolism.
(B) ATP, ADP and/or AMP bind to enzymes involved in metabolism, allosterically changing the enzyme activity.
(C) High levels of ATP result in nonenzymatic phosphorylation of the enzymes involved in metabolism, changing their activity.
(D) High levels of ATP result in excessive production of cyclic AMP, causing activation of pathways such as glycogenolysis and gluconeogenesis.
(E) None of the above.