UW Madison zoology 101 EXAM 3 latest solution update 2023

Why don't amoeba need circulatory systems? - Because they are immersed in particles unlike humans. They use phagocytosis to diffuse O2 and food into their bodies. They release CO2 back in the environment with ease. What is a sink for O2 and a producer of CO2 during cellular respiration? - Mitochondria (as well as eukaryotes) What is required for multi-cellular organisms to help with diffusion? - Circulatory, Digestive, and respiratory systems Animal cells can be surrounded by either... - hemolymph or interstitual fluid Spheres are good for... - Storage Spheres and hollow tubes have a good ratio of what? - Volume to surface area ratio Tubes can be _______________ in order to fit into spaces - Folded or arborized The intestines are ____________ - Evaginated and arborized What are the two types of arborizations? - End branching and side branching Evagination - outward protrusions that increase exchange surfaces invaginations - inward protrusions that increase exchange surfaces Circulation requires what 3 aspects? - Pumping device: Heart with 4 chambers Circulatory tubes: Blood vessels Circulatory fluid: Blood 3 Solutions to Exchange are? - Be flat Be small Have a circulatory system