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Midterm_2010_B_answer

Midterm_2010_B_answer - Chem/Biochem 114B Mid-Term 2010...

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Chem/Biochem 114B Mid-Term 2010 Last Name, First Name Student ID Section Number Page 1 Chem/Biochem 114B Midterm Exam February 5, 2010 Exam Version ‘ B ’ — Mark in ‘Test Form’ on Scantron Write your name and student ID on EVERY page of the exam Fill in the bubbles for your student ID on the scantron. Replace the alphabetical lette r in your student ID with the number ‘1’ (e.g., A = 1, U = 1) Questions 1-25 Multiple Choice 75 points Questions 26-31 Short Answer 36 points 111 points
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Chem/Biochem 114B Mid-Term 2010 Last Name, First Name Student ID Section Number Page 2 Questions 1-25 (3 pts. each): Multiple choice 1. (3pts.) Photosynthesis takes place in the _______. A) Mitochondria B) Stroma C) Matrix D) Thylakoids E) Cristae Answer: D 2. How many electrons are transferred to plastoquinones (Q) by the oxygen evolving center of photosystem II (PSII) per oxygen molecule that is generated during photosynthesis? 3. Please fill in the blank. _________ is the final electron acceptor of the cytochrome bf system responsible for the transfer of electrons from PSII to PSI. A) Ferridoxin. B) Chlorophyll. C) FAD. D) P700. E) Plastocyanin. Answer: E 4. During non-cyclic photosynthesis, the normal photosynthetic pathway for plants and cyanobacteria, how many protons are used for ATP synthesis by the proton pump? 5. What is the overall efficiency of converting light into energy by non-cyclic photosynthesis?
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Chem/Biochem 114B Mid-Term 2010 Last Name, First Name Student ID Section Number Page 3 6. (3pts) In proteins these amino acid residues usually complex to the iron-sulfur clusters. A) Gly B) Arg C) Cys D) All of the above E) None of the above Answer: C 7. (3pts.) Electron flow down the electron-transport chain leads to the
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