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Exam%202%20PinkF09 - Name Lab Section BIOL 301 EXAM 2 Pink...

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Name ___________________________ Lab Section ____ BIOL 301 EXAM 2 Pink 15 October 2009       Directions: Choose the one best answer for each question. If a question seems ambiguous or seems to have more than one correct answer or no correct answer, you may explain your reason for choosing the answer you did (and eliminating the other answers) with a brief comment written in the table below. You will get credit for the question if your reasoning is correct. To submit comments for consideration, fill in your name and lab section on this page and hand it in together with your scantron. Question Number Answer Chosen R e a s o n i n g
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++ SENTENCE COMPLETION ++ In this group of questions, select the answer choice that best completes the statement or best answers the question. 1. At the elbow joint, the _____ causes flexion and the _____ causes extension. A. pectoralis major; deltoid B. triceps brachii; biceps brachii C. biceps brachii; brachioradialis D. biceps, brachii; triceps brachii E. latissimus dorsi; trapezius 2. _____ occurs when increasing the frequency of a stimulus causes an increase in the strength of contraction. 3. A 0.15M NaCl solution is isotonic for red blood cells (RBCs). What will happen to RBCs if they are placed in a 0.15M MgCl 2 solution? (Assume 100% dissociation) A. They will undergo hemolysis. B. They will undergo plasmolysis. C. They will neither shrink nor burst. D. They will undergo crenation. E. Do not choose this answer. 4. Which of the following muscles is NOT part of the quadriceps? 5. A sustained muscle contraction that lacks even partial relaxation between stimuli is referred to as ____. 6. Which of the following exert the same osmotic pressure as 2 moles/liter of ATP ? (Assume 100% dissociation of the salts.) 1. 1 mole/liter glucose 2. 2 moles/liter sucrose 3. 1 mole/liter NaCl 4. 1 mole/liter MgCl 2 5. 2 moles/liter KCl A. 1 B. 2, 3 C. 2, 4 D. 3, 4, 5 E. 1, 3, 4, 5 7. In the figure above, which bones comprise the pectoral girdle?
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BIOL 301 Fall 2009 Exam 2 Pink page 2 of 7
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