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Unformatted text preview: BILD 2 Name ___ KEY _____ Winter Quarter, 2010 1 BILD 2 FIRST MIDTERM EXAM Winter Quarter, 2010 WRITE YOUR NAME ON ALL 5 PAGES. ANSWER ALL 9 QUESTIONS (100 POINTS). CONFINE YOUR ANSWERS TO THE SPACE ALLOWED. (Answer only the exact questions asked, but provide all the detail possible in those cases.) __Vincent__ 1. (10 points) __Dileep___ 2. (10 points) __Vincent__ 3. (10 points) __Katie____ 4. (10 points) __Jeremy___ 5. (10 points) Shalin/Melody 6. (10 points) Patricia/Ruben 7. (10 points) __Omar____ 8. (15 points) Brian/Charlotte 9. (15 points) ________ 100 total TOTAL POINTS __ KEY __ QUESTIONS OR REGRADES? First consult the Exam KEY (here). If questions remain, check with the TA who graded the question (see the names posted above). If the two of you agree on a change, the TA will report it to me. If you and the TA do not agree and you feel strongly about it, attach a brief note (one sentence) and turn the exam plus note into me (DKB) before Feb 6. I will regrade the question and return it to you. SCORES/GRADES: See the histogram on p.5 for letter grade equivalents. _____________________________________________________________ Signature Date BILD 2 Name ___ KEY _____ Winter Quarter, 2010 2 1. (a) (4 points) What are the 2 main disadvantages of being large (besides being easily seen)? 1) Decreased surface-to-volume ratio requires special mechanisms to deal with transport needs (e.g.provide nutrients, remove waste, control heat). 2) Increased weight/size requires better support structures (e.g. thicker legs and therefore less agility). (b) (6 points) What are the 4 main tissue types in mammals? Which is blood? Which are glia? Epithelial, Connective, Muscle, & Nervous Tissue. Blood is a Connective Tissue component while glia are Nervous Tissue components. 2. (a) (6 points) What is the cellular and non-cellular composition of vertebrate bone? Cellular: Osteoblasts, Osteocytes, & Osteoclasts. Non-cellular: Inorganic salts containing calcium & phosphate (70% of bone mass). Also collagen fibers (protein). (b) (2 pts) What keeps bone from compressing (collapsing) when weight is put on it? The inorganic salt crystals (composed of calcium/phosphate). (c) (2 pts) What keeps if from breaking apart when hit from the side? The collagen fibers (running parallel to the lines of stress on the bone). 3. (10 points) Where is each of the following brain structures located and what does each do? (a) somatosensory cortex surface strip running across the brain just behind the midline; encodes information about touch from all the skin (mapped out in a continuous point-to-point way)....
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