If protein synthesis was blocked in etiolated cells, what would be necessary for the "greening" of these cells?
A)reception of light by phytochrome
B)activation of protein kinase 1 by cAMP
C)activation of protein kinase 2 by Ca²⁺
D)post-translational modification of existing proteins
E)100-fold decrease in cytosolic Ca²⁺ levels

Question

Quizplus · Accepted Answer

The "greening" process involves the activation of existing proteins through post-translational modifications, which can occur even if new protein synthesis is blocked.

If Protein Synthesis Was Blocked in Etiolated Cells, What Would