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  3. please do 2931...

Question: please do 2931...

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29) How do enzymes speed up chemical reactions? A) by lowering the activation energy barrier B) by increasing the activation energy barrier C) by making sure the enzyme is part of the product D) by converting kinetic energy back to potential energy 30) What is the most important energy-transferring compound in cells? A) glucose B) fructose C) protein D) adenosine triphosphate (ATP) 31) What is the major physiological importance of breathing oxygen? A) We dont need oxygen to survive. B) We need to eliminate CO2 from our system because it is a waste product. C) We need to control our core temperature by breathing in oxygen from the environment. D) Oxygen must be present in the mitochondrial matrix to accept electrons from the electron transport chain, combine with H+ and form waterplease do 29,31

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