Test 4 Practice Test Key.97

Test 4 Practice Test Key.97 - Exam 4 Practice Test Key...

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Exam 4 Practice Test Key *This may not be all inclusive of questions or topics that will be on your actual exam. Its aim is get you thinking about a variety of concepts and how they relate to one another.* Multiple Choice 1. Which of the following signaling methods is correctly paired with its signal molecule a. Neuronal = local mediators b. Paracrine = hormone c. Endocrine = hormone d. Contact dependent = neurotransmitters 2. Which of the following do NOT act as molecular switches a. Serine/threonine kinases b. Tryptophan kinases c. GTP binding d. None of the above 3. The G-Protein associated with GPCRs a. Have 7 transmembrane domains b. Are trimeric c. Can activate an enzyme or ion channel d. B and C e. All of the above 4. Caffeine works by a. Decreasing cAMP levels b. Increasing cAMP levels c. Stimulating cAMP phosphodiesterase d. Inhibiting Adenylyl cyclase 5. Which of the following are true of cilia a. Allow for flow of water over cell surfaces b. Grow from the centrosome
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c. Are actin based d. Can have a 9+3 axoneme 6. Formins do which of the following a. Allow for the branching of actin filaments b. Allow for the braning of intermediate filaments c. Prevent the branching of actin filaments d. Prevent the branching of intermediate filaments 7. Which of the following is true regarding mucscle contraction? a. Ca2+ binds to the sarcomeres which cause muscle contraction b. Ca2+ binds to myofirbrils which cause muscle contraction c. Ca2+ binds to tropomysoin and causes a shape change of troponin d. Ca2+ binds to troponin and causes a shape change of tropomyosin 8. Which of the following are in the proper order of the cell cycle a. M phase, G1, G2, S b. M phase, G1, S, G2 c. M phase, G0, G1, S d. S, G1, G2, M phase 9. Which of the statements about the check points are correct a. The G1 check point checks for DNA duplication b. The G1 check point checks for a favorable environment c. The Mitosis Check point checks for proper attachment of mitotic spindle to the chromosomes d. A and B e. B and C 10. Cyclin dependent kinases a. Concentration oscilates due to ubquination b. Are activated by cyclins c. Must have proper phosphate placement
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d. Two of the Above e. All of the above 11. How does p53 work? a.
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This note was uploaded on 11/29/2011 for the course BIO 218 taught by Professor Rothschild during the Spring '11 term at VCU.

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Test 4 Practice Test Key.97 - Exam 4 Practice Test Key...

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