Actin, which is part of many cellular structures and has several functions, is produced at constant levels in nearly all cells.It is best described as a(n) _______ protein.
A) inducible
B) repressible
C) conditional
D) constitutive
E) regulated

Question

Quizplus · Accepted Answer

Constitutive proteins are those that are continually produced at constant levels in most cells, unaffected by changes in the environment or cellular conditions. Actin fits this description, as it is a structural protein found in nearly all cells and produced at relatively constant levels.

Actin, Which Is Part of Many Cellular Structures and Has