Which structure shown in the diagram is responsible for the passage of materials into and out of the cell?

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

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

What are some characteristics of a free enterprise economy?