Yes, prokaryotes more often control the number of proteins produced or protein activity. Regulation of the amount is more usual in general.
These are the causes:
1. There are not enough AAs or enough substrates available-making it would require a lot of resources and effort.
2. Control of gene expression is established
3. The half-life of mRNAs is brief: easy to produce more when necessary
4. Coordinate regulation is possible due to operon arrangements
such as Lac Operon
Genes are translated into proteins. In prokaryote cells, some proteins must always be present, while others are only synthesized when necessary (when they are needed). Prokaryotes use gene regulation, which turns on other genes while turning off others, to help carry out these switches.
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