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Lecture 2 Multiple Choice Questions

Lecture 2 Multiple Choice Questions. 1- Reactions that release energy are usually called. 1- anabolic reactions. 2- metabolic reactions. 3- catabolic reactions.

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Lecture 2 Multiple Choice Questions

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  1. Lecture 2 Multiple Choice Questions

  2. 1- Reactions that release energy are usually called 1- anabolic reactions. 2- metabolic reactions. 3- catabolic reactions.

  3. 2- Which of the following molecules is the final electron acceptor for all fuel molecules that are completely broken down to carbon dioxide and water within the mitochondria of an animal cell? 1- glucose 2- fatty acids 3- oxygen 4- amino acid

  4. 3- Which of these is not a final product of aerobic cell respiration? 1- carbon dioxide 2- water 3- oxygen 4- energy (ATP

  5. 4- In the cell's respiration of glucose forming two molecules of pyruvic acid, four atoms of ____ are removed. 1- carbon 2- hydrogen 3- oxygen 4- carbon dioxide

  6. 5- Which of the following statements about glycolysis is false? 1- It results in the formation of two molecules of pyruvic acid. 2- It results in the net gain of four ATP molecules. 3- It can occur with or without oxygen present. 4- It is an exergonic reaction.

  7. 6- As a result of anaerobic respiration in humans, glucose is converted to 1- pyruvic acid. 2- lactic acid. 3- citric acid. 4- acetyl CoA.

  8. 7- The organ most responsible for extracting and converting lactic acid to pyruvic acid, and which ultimately reforms and releases free glucose via the Cori cycle into the bloodstream, is the 1- liver 2- brain 3- cardiac muscle 4- skeletal muscle

  9. 8- In addition to energy (ATP), what is (are) the final product(s) of aerobic respiration? 1- O2 and CO2 2- CO2 and H2O 3- O2 and H2O 4- CO2 only

  10. 9- All of the following are formed as a result of the electron-transport chain except 1- carbon dioxide. 2- oxidized NAD. 3- water. 4- ATP.

  11. 10- The chemiosmotic theory describes how the electron-transport system produces ATP using active proton pumps located within the 1- nuclear membrane. 2- plasma (cellular) membrane. 3- mitochondrial inner membrane. 4- mitochondrial outer membrane.

  12. 11- The ____ is the organ with an absolute requirement for blood glucose as its major energy source. 1- brain 2- heart 3- skeletal muscle 4- liver

  13. 12- Anaerobic metabolism of glucose results in an oxygen debt that is the amount of oxygen needed to metabolize the ______ that is produced. 1- carbon dioxide. 2- lactic acid. 3- glycogen. 4- fatty acid.

  14. 13- When glucose is catabolized under aerobic conditions, ________ will cross the mitochondrial wall and enter the Krebs cycle. 1- CO2. 2- pyruvate. 3- lactate. 4- acetyl CoA.

  15. 14- Which of the following statements describes the role of the electron transport chain? 1- The electron transport chain makes ATP. 2- The electron transport chain produces CO2. 3- The electron transport chain is a reducing agent for NAD. 4- The electron transport chain is an oxidizing agent for FADH2.

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