Berg_B2fnlFnlExmKEY07

Berg_B2fnlFnlExmKEY07 - BILD 2 1 Name KEY Winter Quarter,...

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Unformatted text preview: BILD 2 1 Name KEY Winter Quarter, 2007 FINAL EXAM _______ 1. ( 5 points) Please write your name on all 9 pages. _______ 2. (10 points) Answer only the questions asked. _______ 3. (10 points) Answer each question in the space provided, _______ 4. (10 points) but provide all the detail possible. _______ 5. (10 points) _______ 6. (20 points) _______ 7. (15 points) _______ 8. (15 points) _______ 9. (15 points) _______ 10. (15 points) TOTAL POINTS ON FINAL EXAM _________ _______ 11. (20 points) _______ 12. (15 points) TOTAL POINTS IN COURSE _________ _______ 13. (15 points) _______ 14. (10 points) _______ 15. (20 points) _______ 16. (15 points) COURSE GRADE _________ _______ 17. (15 points) _______ 18. (15 points) _______ 19. (10 points) _______ 20. (20 points) _______ 21. (10 points) _______ 22. (10 points) (300 points total) GRADES Mean of the top 5%: _423 ___ As 0.85x423 360 (A+, A, A-) Bs 0.70x423 296 (B+, B, B-) Cs 0.50x423 212 (C+, C, C-) Ds 105 [Top Score: Final, 270; total, 437; corrected total, 451] [Other Top Finals: 3 got 260] [Other top totals/corrected totals: 436/437, 428/432, 427/444] Exam Pickup: If you signed the waiver, your exam will be in a box across from the elevator on 3 rd floor of Pacific Hall. Otherwise it will be available from the secretary Kathleen McPherson in 3140B Pacific Hall, 1-3 pm, weekdays. BILD 2 2 Name KEY Winter Quarter, 2007 1. (5 points) How do arteries differ from veins? Arteries : Blood vessels with thick muscle walls taking blood (under high pressure) from the heart. Veins : Blood vessels with thin muscle walls returning blood (under low pressure) to the heart. 2. (10 points) Where is the hypothalamic-portal system and what does it do? Give an example. Connecting the hypothalamus with the anterior pituitary, the hypothalamic-portal system carries regulatory factors (releasing factors) from hypothalamic neurons to the target cells in the anterior pituitary that respond by releasing the corresponding hormone. Example(s): GnRH triggers FSH release (or LRF triggers LS release; or CRF triggers ACTH release; or TRH triggers TSH release). 3. (10 points) What is auxin and how does it contribute to phototropism? Auxin is a plant hormone the increases the rate of cell growth and is transported away from light. Sunlight striking the growing shoot will drive auxin to the dark side where it will increase the growth rate locally, thereby tipping the shoot towards the light. This is phototropism. 4. (10 points) How are we able to carry so much CO 2 in blood? (Show the steps involved.) CO 2 dissolves in water and combines with H 2 O to form H 2 CO 3 in a reaction facilitated by the enzyme carbonic anhydrase. The H 2 CO 3 readily dissociates into H + + HCO 3- , both of which are very soluble in water. As a result, large amounts of CO 2 can be transported as HCO 3- , only to be removed again by reversing the reaction, i.e. blowing off COremoved again by reversing the reaction, i....
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Berg_B2fnlFnlExmKEY07 - BILD 2 1 Name KEY Winter Quarter,...

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