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MOVE CURSOR OVER ANSWERS: DO NOT CLICK MOUSE
1. What enzyme catalyzes the hydrolysis of creatine phosphate (CP)?
A. Hexokinase
B. Phosphorylase
C. Creatine kinase
D. Phosphofructokinase
2. Study of energy transfer in chemical reactions within living tissue.
A. Entrophy
B. Bioenergetics
C. Metabolism
D. Mitochondrial respiration
3. A chemical reaction that releases free energy.
A. Exergonic
B. Endergonic
C. Equilibrium
D. Enzymatic
4. During steady-state exercise, most pyruvate does what?
A. Is converted to lactate
B. Goes directly to the electron transport chain
C. Enters the mitochondria (and is oxidized in matrix)
D. Converts to NADH + H+
5. What is the formation of water and ATP in the electron transort system called?
A. Oxidative phosphorylation
B. Mitochondrial respiration
C. Tricarboxylic acid cycle
D. Glycerol-3-phosphate shuttle
6. What is a coenzyme?
A. A protein substance derived from a vitamin that activates an enzyme
B. A nonprotein substance derived from a vitamin that activates an enzyme
C. A carbohydraate substance derived from a vitamin that activates an enzyme
D. A fat substance derived from a vitamin that activates an enzyme
7. What is a rate-limiting or allosteric enzyme?
A. AMP
B. A modulator such as phosphate
C. An enzyme that can be acted on (inhibited or stimulated) by other chemicals
D. None of the above
8. What substrate does the brain and nervous system primarily rely as fuel?
A. Free fatty acids (Fats)
B. Amino acids (Proteins)
C. Glucose (Carbohydrates)
D. Ketones (Metabolites of fatty acids)
9. Where does gluconeogenesis take place?
A. Muscle
B. Pancreas
C. Small intestines
D. Liver
10. The TCA cycle begins and ends with what molecule?
A. Pyruvate
B. Acetyl-Coenzyme A
C. Citrate
D. Oxaloacetate (OAA)
11. Where does the TCA cycle occur?
A. Cytoplasm of cell
B. Mitochondrial matrix
C. Inner membrane of mitochondria
D. Intermembrane of mitochondria
12. Before fatty acids can enter the TCA cycle, what process must they undergo first?
A.Transamination
B. Deamination
C. Beta oxidation
D. Gluconeogenesis
13. What is the main rate-limiting enzyme of glycolysis?
A. Hexokinase
B. Phosphorylase
C. Creatine kinase
D. Phosphofructokinase
14. Total of all energy transformations in the body.
A. Entrophy
B. Bioenergetics
C. Metabolism
D. Mitochondrial respiration
15. What is another name for oxidation-reduction reactions?
A. Redox
B. Oxidative phosphorylation
C. Substrate level phosphoylation
D. Allosteric enzyme reaction
16. What is another name for the Krebs cycle?
A. Electron transport system
B. Glycerol-3-phosphate shuttle
C. Tricarboxylic acid cycle
D. None of the above
17. The process by which protein or fat is converted to glucose is called:
A. Neoglucogenesis
B. Glycogenesis
C. Lipogenesis
D. Gluconeogenesis
18. Involves bonding of smaller molecules to produce larger molecules.
A. Anabolism
B. Catabolism
C. Metabolism
D. Beta oxidation
19. An enzyme that can be activated or inhibited is termed what?
A. Reductive enzyme
B. Oxidative enzyme
C. Allosteric enzyme
D. None of the above
20. What is the most rapid means to regenerate ATP?
A. Glycolysis
B. Mitochondrial respiration
C. Phosphagen system
D. All of the above are equal
21. The breakdown of glycogen is referred to as:
A. Glycolysis
B. Glycogenolysis
C. Gluconeogenisis
D. Glycogen sythetase
22. Any substance acted upon by enzymes is referred to as a:
A. Substrate
B. Molecule
C. Alkene
D. Alkane
23. The phosphagen energy system may be labeled in which way?
A. ATP-PC
B. PCr-ATP
C. PC-ATP
D. All of the above are correct
24. What moleculte is often referred to as the common intermediate of metabolism?
A. Pyruvate
B. Lactate
C. Acetyl-Coenzyme A (ACoA)
D. AMP
25. The Cori Cycle involves:
A. The conversion of lactate to glucose in the liver
B. The conversion of pyruvate to ACoA in the mitochondria
C. The conversion of alanine to glucose in the liver
D. The catabolism of FFA in the beta cycle
26. What does redox potential mean?
A. The potential for oxidation and reduction
B. The ratio of NAD+ to NADH
C. Mass action effect
D. Rate of conversion of pyruvate to acetyl CoA
Complete