Once cellular respiration can no longer be sustained by an adequate oxygen supply, which of the following processes does the body rely on to help continue to be able to manufacture ATP? 1) electron transport chain
2) photosynthesis
3) fermentation
4) osmosis

What characteristic does giardia have that makes it a protist, a characteristic that all other protists have? a. it is a unicellular eukaryote. b. it is a eukaryote that is not an animal, a plant, or a fungus. c. it is parasitic and has flagella. d. it spends part of its time in a body of water.