Modify the rate of enzyme activity.

Explanation:

Cells can modify it, here is involve the energy ATP which is included in enzyme process, which can be regulated through the amount of carbohydrates included.

Nucleic Acids, don't regulate enzyme processes because their is saved genetic information that set all the rest.

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

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