lOMoARcPSD 3454541 Exam 20 May 2015 questions Introductory Biology Comparative Physiology Cornell University StuDocu is not sponsored or endorsed by any college or university Downloaded by yelena radutskaya radutskaya yahoo com lOMoARcPSD 3454541 Name Prelim 3 and Final BioG 1440 Total pages in exam including cover 0 WATCH YOUR TIME This is a 2 hour and 30 minute test Name Student ID By signing below I acknowledge that I am abiding by Cornell University s Code Signature PLEASE 1 WRITE YOUR NAME on all pages of the exam 2 Be sure to fill out your full name and your 7 digit Cornell ID on the scantron sheet in pencil 3 Record answers to all multiple choice questions on the bubble sheet in pencil or pen and directly on the exam in pen 4 Write legibly If we cannot read your answer we WILL NOT grade it 5 Use only the space provided Answers provided outside of space provided will not be graded 6 Do NOT use calculators or any other electronic devices 7 Circle the name of your TA and write your day and section time TA names are missing Q13 Q14 Q15 Q16 Q17 Q18 Q19 SA All multiple choice are worth 3 pts and all short answers are worth 4 pts possible 64 points total 1 Downloaded by yelena radutskaya radutskaya yahoo com MC Total lOMoARcPSD 3454541 Name PRELIM 3 QUESTIONS 1 Which of the following is not a property of a steroid hormone a They can alter the pattern of gene expression b They bind directly to DNA c They can diffuse through a lipid bilayer d They are transported via intracellular receptors e They can move from the extracellular fluid into the cytoplasm unassisted 2 Which of the following statements about partial pressure is false a The partial pressure of a gas is proportional to the concentration of that gas when not being measured across a gas water interface b Partial pressure of a gas across a gas water interface is affected by the hydrophobicity of that gas c Partial pressure of a gas will predict the direction of the net movement of that gas across a gas water interface d At equilibrium the concentration of a gas is less important than partial pressure when predicting the net movement of that gas e None of the above is false 3 Which of the following statements concerning the Bohr Effect is false a When CO2 binds to hemoglobin it increases the affinity of hemoglobin for O2 b Increasing temperature decreases the affinity of hemoglobin for O2 c Decreasing pH decreases the affinity of hemoglobin for O2 d An increase in the concentration of H decreases the affinity of hemoglobin for O2 4 The Kangaroo rat is a desert animal that needs to conserve as much water as possible Which of the following statements about the Kangaroo rat is likely false a Kangaroo rat blood is hyperosmotic compared to human blood b One would expect the nephron of a Kangaroo rat to have a much longer loop of Henle compared humans c Kangaroo rat urine will be hyperosmotic relative to the human urine d The Kangaroo rat will have a very high concentration of salt in its renal medulla relative to humans 2 Downloaded by yelena radutskaya radutskaya yahoo com lOMoARcPSD 3454541 Name 5 You are hurrying to your 1440 exam and crossing the street in front of Trillium listening to an MP3 of your favorite band when you suddenly look up to notice the 41 bus bearing down on you with the horn blaring Your pupils dilate and you jump out of the way Which of the following choices BEST fits this scenario a brain stem GABA b Parasympathetic division acetylcholine c Sympathetic division norepinephrine d liver glycogen storage e bronchial constriction 6 During one cardiac cycle of the human heart which of the following events occurs 3rd among those listed here a Ventricular contraction b Firing of the AV atrioventricular node c Conduction of an action potential in the right and left branch bundle d Firing of the SA sinoatrial node e Contraction of the atria 7 Which of the following statements about the human heart is false a Pulmonary veins take oxygenated blood to the left atrium b The muscular walls of the right ventricle are thicker than those of the left ventricle c The superior vena cava transports oxygen poor blood from the body to the heart c The aorta transports oxygenated blood to the rest of the body e The Bicuspid valve prevents blood from flowing from the left ventricle to the left atrium 8 Which of the following is used by insects to compensate for the inefficiencies of their open circulatory system a Their blood does not have an oxygen carrying pigment b Faster circulation time c Higher blood sugar d Increased blood pressure e A and C 9 Which of the follow is false when comparing the aorta and the capillary bed a The cross sectional area of the capillary bed is larger than that of the aorta b Resistance is higher in the capillary bed than in the aorta c Net flow is generally the same in the aorta and the capillary bed d Linear velocity is higher in the capillary bed than in the aorta e Walls of the capillaries are more porous than those of the aorta 3 Downloaded by yelena radutskaya radutskaya yahoo com lOMoARcPSD 3454541 Name 10 Diamondback terrapins Malaclemys terrapin live in estuaries where freshwater and saltwater mix Which of the following would you not expect to be an adaptation for life in this environment a Ability to produce concentrated urine b Salt glands on the head to concentrate salt output c Ability to regulate the number of Na K pumps in the cell membrane d Higher tolerance for fluctuating salinity levels e Drinking of seawater 11 Which of the following symptoms is not indicative of Exercise Associated Hyponatremia EAH a Swelling of the brain b increased blood pressure c crystalline buildup on skin and clothes d High U P ratio e All the above 12 Name 2 hormones that are produced in the posterior pituitary Choose one and describe how neural feedback regulates its release 13 What is the primary purpose of myoglobin What would happen if humans did not have myoglobin and why 14 During finals students often are under a lot of stress as they study for their exams Therefore it is not uncommon for students to crash and get sick in the days and weeks after finals Explain this phenomenon from a physiological perspective and what might cause this crash Hint mention at least one steroid 4 Downloaded by yelena radutskaya radutskaya yahoo com lOMoARcPSD 3454541 Name FINAL QUESTIONS 17 You are running an experiment attempting to determine the rate of diffusion of two different molecules A and B across a cell