Which of the following is true when the level of CTP is low in a cell?
(A) CTP is converted to ATCase.
(B) The metabolic traffic down the pathway increases.
(C) ATCase is inhibited, which slows down CTP synthesis.
(D) The final product of the pathway is reduced.

The following synthetic pathway of nRNA pyrimidine, cytidine 5′ triphosphate, CTP. This pathway begins with the condensation of two small molecules by the enzyme aspartate transcarbamylase (ATCase).

Transcribed Image Text:

NH,—C−0—P—OH || Carbamyl phosphate + OH HOOC —CH, NH₂ I -СН СООН