What is the main function of the krebs cycle?
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a. using pyruvate to make energy carriers
b. producing large numbers of atp molecules
c. breaking down energy carriers
d. producing oxygen for use in photosynthesis

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