Study Questions for Week 1 - Class Version

Study Questions for Week 1 - Class Version - M acetic acid...

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BISC 330L Spring 2011 Study Questions for Week 1 (Tabancay) 1. What are the defining characteristics of prokaryotic and eukaryotic cells? 2. Biochemistry has shown that humans, yeast, and plants are actually quite similar despite vast differences in outward appearance. What is this based on? 3. Draw a hydrogen bond that is present in the cell? Which is the hydrogen bond donor? Which is the hydrogen bond acceptor? 4. Explain how van der Waals interactions can be called a “team effort”. 5. Draw the van der Waals interaction graph and note the van der Waals contact distance. What is the van der Waals contact distance? 6. Discuss how the various bonds/interactions explained in lecture take part in the structure of DNA double helix. 7. What are the various methods to denature and anneal two strands of complementary DNA? 8. Derive the Henderson-Hasselbalch equation. 9. A buffer is prepared containing 1.00
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Unformatted text preview: M acetic acid and 1.00 M sodium acetate. What is its pH? 10. Find the pH of 1.25 M acetic acid and 0.75 M potassium acetate. 11. Calculate the pH of a buffer solution made from 0.20 M HC 2 H 3 O 2 and 0.050 M C 2 H 3 O 2-that has an acid dissociation constant for HC 2 H 3 O 2 of 1.8 x 10-5 . Solve this problem by plugging the values into the Henderson-Hasselbalch equation for a weak acid and its conjugate base. BISC 330L Spring 2011 Study Questions for Week 1 (Tabancay) 12. Calculate the concentration of benzoic acid and benzoate in a solution whose pH = 5.2. The pKa of benzoic acid is 4.20 and the solution was prepared to be 0.005 M benzoic acid. 13. How does X-ray crystallography lead to a prediction of the 3-D structure of a protein? 14. What are various ways that gene expression can be affected? 15. How did GFAJ-1 bacteria challenge our knowledge of the structure of DNA?...
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This note was uploaded on 02/15/2012 for the course BISC 330L taught by Professor Petruska,tower during the Spring '07 term at USC.

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Study Questions for Week 1 - Class Version - M acetic acid...

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