B265F 4th Test Practice

B265F 4th Test Practice - Last Years Test 1. How many color...

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Last Years Test 1. How many color opsins do humans have ? a. red and green b. blue and yellow c. blue green and red d. blue, green, red and yellow 2. What is the approximate refractive index of the cornea ? a. 1.00 b. 4.00 c. 1.32 d. .68 3. When there is maximal load on a muscle and the velocity of its shortening is zero, the muscle contraction is a. isotonic b. isometric c. doing the most work d. most efficient 4. We have said many things about the eye and its operation are “backwards”. What is included a. light passes through layers of neurons before reaching receptors b. rods release an inhibitory neurotransmitter when not stimulated c. sodium channels of the rods are open when not stimulated d. a and b e. a, b and c 5. In perception of _________________, a coiled springy protein pulls open an ion channel when it is displaced. a. chemicals b. heat c. sound d. light e. pain 6. Which ion moves through this channel ? a. potassium moves into the cell
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This document was uploaded on 11/04/2011 for the course BIL 265 at University of Miami.

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B265F 4th Test Practice - Last Years Test 1. How many color...

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