Specialized cells regulate the expression of genes because t

Specialized cells regulate the expression of genes because they

A. do not want the genes to become worn out.

B. cannot control the translation of proteins.

C. do not carry the complete genetic code in their nuclei.

D. do not need the proteins that are specified by certain genes.

Solution

D) Do not need the proteins that are specified by certain genes

Cells most certainly can control translation, so option B) is incorrect. There is more than one mechanism by which cells do so. However, they prefer to control gene expression because this way, they don\'t waste energy making mRNAs that they won\'t be using. As far as I know, genes do not become \"worn out\", so A) is incorrect, while C) is simply factually incorrect: Every nucleated cell in our body carries our complete genome. In fact, this is the very reason cells need to control gene expression to begin with: They don\'t want to express the whole genome, they only want to express what they need from it.