118exam2-fall06 - BIOLOGY 118 - EXAM 2 Oct. 25, 2006 -...

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BIOLOGY 118 - EXAM 2 Oct. 25, 2006 - VERSION A ..) on your answer sheet. You can keep this list of exam questions. You may write on it if you wish. Each question has only 1 correct answer. Indicate your choice on the answer sheet - scantron. If you are stumped by a question, place a mark by it, and return to it later. Ach = Acetylcholine Filaments = Myofilaments (thick apex = End/tip of cochlea Folate = Vitamin B 9 base = Start of cochlea Hz = Cycles/second BBB = Blood brain barrier NE = Norepinephrine BMI = Body mass index Interneuron = Association neuron CSF = Cerebrospinal fluid PTH = Parathyroid hormone CP = Creatine phosphate SR = Sarcoplasmic reticulum VNO = Vomeronasal organ 1. Which connective tissue has the best chance of a full and rapid repair, if damaged? a. Bone b. Tendon c. Ligament d. Cartilage 2. Graph 2 shows that in each age group (50 - 80 yrs), the rate of hip fractures generally ______ as bone densities increase. a. increases linearly b. increases exponentially c. decreases linearly d. decreases exponentially 3. Which cell has active transport pumps that secrete H + ions to digest bone tissue? a. Osteoblast b. Chondroblast c. Osteoclast d. Chondrocyte 4. If your plasma calcium is _______, the hormone _________ promotes calcium (Ca +2 ) deposition into bone tissue. a. high - PTH b. high - Calcitonin c. low - Insulin d. low - Melatonin 5. In Seattle, which infant is at the highest risk of developing rickets? a. Dark skin, breast fed, no Vitamin D supplements taken by mom or infant b. Pale skin, breast fed, no Vitamin D supplements taken by mom or infant c. Pale skin, fed formula with Vitamin D d. Dark skin, breast fed, infant given Vitamin D supplements 6. The rapid decline in the hormone ______ during menopause accelerates bone loss amongst women. a. Testosterone b. Estrogen c. Calcitonin d. PTH 7. Which 25 year old woman is at the highest risk of losing bone density? a. BMI = 30, doesn’t exercise, menstruates regularly b. BMI = 22, exercises regularly, menstruates regularly c. BMI = 17, doesn’t exercise, has amenorrhea d. No 25 year old is at risk of bone loss. 8. One _____ contains many ______. a. myoblast - myocytes b. myocyte - myofibrils c. sarcomere - fascicles d. actin - myofilaments
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9. Myoblast proliferation (by mitosis) is highest _______. a.
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118exam2-fall06 - BIOLOGY 118 - EXAM 2 Oct. 25, 2006 -...

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