Cells express a limited number of genes at a time. This can result in the specialization of cells within organisms. This understanding best supports which of the following statements? Only multicellular organisms have useful, unexpressed genes.
The process of expressing genes is controlled by the cell.
Certain genes cannot be expressed by eukaryotic cells.
The expression of genes is a result of random chance.

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls