Principles of Human Physiology Study Set 1
Quiz 3 :
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Q77 Q77 Q77
Cyanide is a deadly poison that attaches to cytochrome c oxidase, the last protein in the electron transport chain before the terminal electron acceptor. Based on your knowledge of the electron transport chain, which statement below best describes the action of cyanide on the body?
Q136 Q136 Q136
The enzyme carbonic anhydrase catalyzes the following reaction: CO2 + H2O -H2CO3, then H2CO3 dissociates reversibly to form H+ + HCO3- When tissue becomes more active, carbon dioxide increases due to its production in , causing hydrogen ion concentration to .
Q174 Q174 Q174
Carbon dioxide can react with water to produce bicarbonate and hydrogen ions through 2 reversible reactions as follows: CO2 + H2O "H2CO3 "H+ + HCO3- Blood flows from arteries into capillaries and then into veins. As the blood moves through the capillaries, carbon dioxide produced by the cells enters the blood. Therefore, venous blood has a higher pH than arterial blood.
Q182 Q182 Q182
The following equation, C6H12O6 + 6 O2 "6 CO2 +H2O + Energy, is the central reaction of energy metabolism. First, describe in general terms what the materials on the left side of the equation represent. How would they be classified in terms of metabolic reactions? Would energy be needed or released in this reaction? How would you classify this type of energy reaction? Next, describe why the arrow in the middle of the equation is pointing in both directions. What circumstances would cause it to move either to the right or to the left? Finally, describe the right side of the equation and what these materials represent. How would they be classified in terms of metabolic reactions? Would energy be needed or released on this side of the equation? What type of energy reaction is this?