In the context of vision the blind spot is a. an area of the retina where there are no rods or cones b. a nontransparent areas on cornea c. a nontransparent area on the lens d. an area of the retina where rods and cones are concentrated

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