Sample Exam 2011 - Sample Exam, BSC 2011, Dr. Evans Which...

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Sample Exam, BSC 2011, Dr. Evans Which of the following is NOT a characteristic of most gas exchangers? a. thin membrane b. well perfused with blood c. large surface area d. counter-current flow * e. all of the above are characteristics of most gas exchangers The inspiratory center in the brain: a. is part of the autonomic nervous system * b. is stimulated by stretch receptors in the lungs c. stimulates the diaphragm to relax d. inhibits the expiratory center in the brain e. none of the above is true Gas exchangers: a. are always on the surface of the body b. are found only in the vertebrates c. are always called lungs d. may add to the evaporative water loss in terrestrial animals * e. none of the above is true Hemoglobin: a. is found only in the invertebrates b. contains a single globin molecule c. contains four iron atoms * d. is a storage molecule e. none of the above is true Hemocyanin: a. is found in invertebrates b. can raise the blood oxygen content to 80 ml/l c. contains the metal copper d. is a monomer e. all of the above are true * The oxygen carrying capacity of blood without a transport pigment present is: a. 7 ml/l * b. 500 ml/l
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c. zero d. 20 ml/l e. none of the above Which of the following four statements about myoglobin is FALSE? a. it contains a single heme molecule b. it is a transport pigment * c. it has a higher affinity for oxygen than hemoglobin d. it is common in red muscle in the vertebrates e. all of the above statement about myoglobin are true Which of the following four statements about an oxygen dissociation curve is FALSE? a. it plots the relative concentration of oxygenated molecule (transport or storage) against the partial pressure of oxygen b. it can NOT be used to determine the P 50 * c. it can show the effect of pH on the molecule d. it can give you some idea of the environmental oxygen concentration of the organism e. all of the above statements are true about the oxygen dissociation curve Fetal hemoglobin: a. is actually myoglobin b. is a monomer c. has a higher affinity for oxygen than maternal hemoglobin * d. has the same amino acid structure as maternal hemoglobin e. none of the above is true about fetal hemoglobin The Bohr Shift: a. was discovered in Gainesville b. is produced at the lungs c. is produced when CO 2 leaves the red blood cell d. is produced by carbamino compounds e. none of the above is true about the Bohr shift * What does NOT happen when the red blood cell is in the lungs? a.
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This note was uploaded on 03/30/2010 for the course BSC BSC2011 taught by Professor Evans during the Spring '10 term at École Normale Supérieure.

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Sample Exam 2011 - Sample Exam, BSC 2011, Dr. Evans Which...

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