試題詳解

複選題
24. Which of the following statement(s) about intracellular second messengers is (are) TRUE?
(A) Cyclic GMP can act as secondary messengers.
(B) It is a hormone that affects the DNA of the target cell.
(C) Adenosine triphosphate can act as secondary messengers.
(D) It is a specialized form of RNA.
(E) Ca²⁺ can function as a secondary messenger by controlling the flow of Ca²⁺ into the cells.