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Unformatted text preview: BILD1 / Spring 2006 / MIDTERM 1 NAME: ____________________________ Traver / Kiger BILD 1 MIDTERM EXAM #1 PRINT YOUR NAME LEGIBLY ON EVERY PAGE!! ALL STUDENTS READ THE FOLLOWING WAIVER: By signing this waiver, I give permission for this exam to be returned to me in class. This may expose my score to other students. If I do not sign this waiver, I acknowledge that this exam will not be returned in class but rather must be picked up no earlier than Tuesday, April 25 th in the office of Ria del Rosario in Room 4119 of the Natural Sciences Building. Exams not picked up by the end of Spring quarter will be discarded. Regrade requests must be accompanied by a cover letter stating exactly the issues to be looked at and must be turned in by Friday, April 28 th . ___________________________________________ _________________________ (Student Signature) (Date) QUESTION: POINTS: 1. ________ (17 total) 2. ________ (21 total) 3. ________ (18 total) 4. ________ (13 total) 5. ________ (15 total) 6. ________ (14 total) 7. ________ (15 total) 8. ________ (19 total) 9. ________ (18 total) Extra Credit. ________ (6 possible) TOTAL ________ (150 points possible) BILD1 / Spring 2006 / MIDTERM 1 NAME: ____________________________ Traver / Kiger 1 PROBLEM 1. The Chemistry of Life A. Name the four elements that make up 96% of living matter. (2 POINTS) B. An element has an atomic number of 6. How many electrons does it have? ________ What is its atomic mass number? ________ How many protons are in its nucleus? ________ What is its valency? ________ How many bonds can this element form with other elements? ________ What element is this? _________ Draw its electron shell diagram below. (7 POINTS) C. Define the term MOLECULE. (1 POINT) D. Write out each of the four bond types discussed in class in order of decreasing strength. (4 POINTS) E. One liter of a solution with a pH of 4 has ______ hydrogen ions (H + ) than 1 L of a solution with a pH of 7? (1 POINT) A) 4 times more. B) 1000 times more. C) 10,000 times more. D) 4 times less. E) 1000 times less. F) 10,000 times less. F. One of the buffers that contributes to pH stability in human blood is carbonic acid (H 2 CO 3 ). Carbonic acid is a weak acid that dissociates into a bicarbonate ion (HCO 3- ) and a hydrogen ion (H + ). Draw the reaction that would predominate if the pH of blood were to decrease. (1 POINT) G. Amino acids are acids because they always possess which functional group? (1 POINT) A) amino B) carboxyl C) aldehyde D) carbonyl E) sulfhydryl BILD1 / Spring 2006 / MIDTERM 1 NAME: ____________________________ Traver / Kiger 1 PROBLEM 1. The Chemistry of Life A. Name the four elements that make up 96% of living matter. (2 POINTS) B. An element has an atomic number of 6. How many electrons does it have? ________ What is its atomic An element has an atomic number of 6....
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This note was uploaded on 04/07/2008 for the course BILD 1 taught by Professor Boulanger during the Spring '08 term at UCSD.
- Spring '08