The maximum blood pressure is during: A) right atrium contraction: the dub sound occurs
B)left atrium contraction: the lub sound occurs
C) left ventricular contraction: the lub sound occurs
D) right ventricular contraction: the dub sound occurs

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