BILD1 / Winter 2007 / FINAL EXAM NAME: _________________________________ Traver Page 0BILD 1 – FINAL EXAM PRINT YOUR NAME LEGIBLY ON EVERY PAGE!!ALL STUDENTS READ THE FOLLOWING: Exams may be picked up in Room 6310 of the Natural Sciences Building on or after 3/27. Exams not picked up by the end of Spring quarter will be discarded. NAMES OF STUDENTS SITTING ON EITHER SIDE OF YOU: ________________________________________ _______________________________________ PROBLEM:POINTS: 1. ________ (29 total) 2. ________ (31 total) 3. ________ (31 total) 4. ________ (29 total) 5. ________ (27 total) 6 ________ (33 total) 7. ________ (34 total) 8. ________ (26 total) 9. ________ (30 total) 10. ________ (30 total) Extra Credit ________ (15 possible) TOTAL ________ (300 points total)
BILD1 / Winter 2007 / FINAL EXAM NAME: _________________________________ Traver Page 1PROBLEM 1. Macromolecules: Nucleic acids, Proteins, Lipids (29 POINTS)1. (5 POINTS) An element has 8 protons in its nucleus. How many electrons does it have? ______ How many bonds can this element form with itself? ______ With hydrogen? ______ What is its valence? ______ Draw its electron shell diagram below: 2. (7 POINTS) Write the general name for each type of compound listed below: (a)CH3-CH2-CH2OH ____________ (b)CH3-CH2-COOH __________________ (c) CH3-CH2-CHO _____________ (d)CH3-CH2-CH3_________________ (e) Which molecule is least soluble in water? ________________ (f) Why? _________________________________________________ 3. (7 POINTS) Answer all questions below for the molecule ATP (shown below): (f) List the one letter abbreviations for the three pyrimidines: ___________________ (g) List the two purines: _________________ 4. (4 POINTS) Name four biologically important and distinct molecules that contain phosphorus. 5. (6 POINTS) Answer the following questions based on the following DNA sequence: 5’ – A T T C C G A C G G T A – 3’ (a) Write out the sequence of the complementary strand, labeling the 5’ and 3’ ends. (b) How many hydrogen bonds result from the base pairing of these two sequences? (c) What type of bonds link the nucleotides along the DNA backbone? ____________________ (a) Label all carbon atoms numerically. (b) Point out the 5’ end. (c) Point out the 3’ end. (d) What is the difference between ATP and dATP? (e) What is ddATP used for?
BILD1 / Winter 2007 / FINAL EXAM NAME: _________________________________ Traver Page 2PROBLEM 2. Cell Structure (31 POINTS)1. (6 POINTS) The plasma membrane is a type of phospholipid bilayer. (a) Draw a small segment of a phospholipid bilayer: (b) Label the hydrophobic and hydrophilic regions of your drawing. (c) Which of the molecules in Problem 1, part 2 could most easily cross this membrane? (d) Why? 2. (18 POINTS) Insert ONE of the following answer choices (a through m) into each of the blanks below: ___________ bacterial structure for conjugation ___________ Mitotic spindle involves this cytoskeletal polymer ___________ RNA synthesis occurs here ___________ the Light Reactions occur here in eukaryotes. ___________ steroid synthesis occurs here ___________ Glycolysis occurs here. ___________ Synthesis of secreted proteins occurs here ___________ A water-filled organelle ___________ Vesicular cargo enters its cisface 3. (7 POINTS) The lysosome is a membrane-bound organelle that contains enzymes to break down macromolecules. (a) Name four general classes of macromolecules that might undergo hydrolytic cleavage into their respective monomers and indicate for each what the monomer is.