Biology Exam 1

Biology Exam 1 - General Biology 101 Fall 2009 Exam I - Dr....

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General Biology 101 PRINT your name __________________________________________ Fall 2009 Exam I -- Dr. Morrison Discussion leader ___________________________________________ Version A Discussion section number _____ Disc Day and Time ______________ There are 50 questions worth 2 points each. Use a #2 pencil to put all your answers on the scantron sheet. When you’re finished, use a PEN to mark each pencil mark with a single slash (/) to “anchor” your choice. 1. Insects, birds and mammals all have A. closed circulatory systems. B. kidneys. C. spiral valves. D. digestive enzymes. 2. Which one of these structures combines both intracellular and extracellular digestion? A. a pig’s small intestine B. an cockroach’s proventriculus C. A Paramecium’s digestive vacuole D. A Hydra’s gastrovascular cavity 3. Which of these body shapes has the worst surface area to volume ratio for gas exchange? A. a large round sphere. B. many small spheres. C. highly branched D. paper thin and flat. 4. The human liver detoxifies ammonia by combining it with A. water C. carbon dioxide B. amino acids. D. uric acid. 5. In what form do freshwater fish excrete most of their nitrogenous waste? A. ammonia B. urea C. urine D. uric acid 6. In the kidney, filtrate that leaves the glomerulus is directed into the proximal convoluted tubule by A. the ascending loop of Henle. B. the bladder. C. the Bowman’s capsule. D. the collecting duct. 7. Which part of the nephron helps the kidney recover water by using energy to pump sodium ions out of the tubule? A. Descending loop of Henle. B. Collecting duct. C. Glomerulus. D. Ascending loop of Henle. 8. Caffeine increases urine volume because of its effect on A. the collecting duct B. the loop of Henle C. the glomerulus D. ADH. 9. Any water remaining in the urine at the end of the collecting duct continues through to A. the bladder B. the colon. C. the seminal vesicles D. the loop of Henle. 10. “Countercurrent flow” doubles the amount of A. oxygen gills can extract from water. B. oxygen that can be carried in the blood C. oxygen dissolved in the water. D. surface area found in the gills. 11. Without using an artificial kidney machine, a kidney patient can remove urea from his blood by injecting dialysis fluid into A. his peritubular capillaries. B. his abdominal cavity. C. his kidney. D. his liver. A-1
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12. Earthworms drown in water because A. their lungs fill with water. B. their tracheal system fills with water. C.
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Biology Exam 1 - General Biology 101 Fall 2009 Exam I - Dr....

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