MCDB_1A_MT1_B_White_3_

MCDB_1A_MT1_B_White_3_ - Name _ TA _ MCDB 1A Midterm...

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Name _________________________ TA ________________________ MCDB 1A Midterm Examination I October 19, 2010 Scantron Instructions: 1. Use a #2 pencil to complete the form. 2. Write your name and fill in the appropriate bubbles. 3. Write your perm. number in the ID number box and fill in the bubbles. 4. Write the color of your test in the space underneath the ID number box. 5. Fill in the entire rectangle of the answer you choose. If you erase, erase completely STAY CALM, CONCENTRATE AND GOOD LUCK GENETIC CODE, AND METABOLIC PATHWAYS DIAGRAMS AT END OF EXAM READ ALL QUESTIONS THOROUGHLY----IN ALL CASES, PICK THE BEST ANSWER 33 QUESTIONS - 3 POINTS EACH Test Color - 1 Point 1. Is this the correct chemistry for peptide bond formation? A. No B. Yes 2. Which of the following is a correct ordering according to size, from largest to smallest. A. nucleus, chromosome, gene, protein B. nucleus, chromosome, protein, gene C. chromosome, nucleus, protein, gene D. nucleus, protein, chromosome, gene E. none are correct 3. Consider the Hershey-Chase experiment. This was the experiment in which radioactive 32P and 35S was used to label the DNA and protein of phage T2. What was the purpose of this experiment? A. to test if DNA contains phosphate and proteins contain sulfur B. to determine if DNA or protein is the genetic material C. to test if the two strands of DNA separate from each other during replication D. to test if proteins and DNA have different densities in a CsCl gradient E. none of the above is the reason the experiment was performed MCDB 1A MT1 B White (3) Version: 3 Page: 1
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4. Consider five mutations that cause the following codon changes. Which will not cause a change in the structure of the eventual protein? Original ("wild type") codon codon in mutated sequence A. GUC GCC B. CUU GUU C. UUA UAA D. ACU ACG E. GCC GAC 5. If the reaction A + B -------> C + D has a ! G = +9 kcal/mole, what would you expect about the reaction? A. it will go forward very quickly B. it will go forward very slowly C. more information is required in order to know how fast it will go 6. Imagine that you are a very hungry cell and suddenly get a big supply of " -ketoglutarate. How many ATPs can you generate from each individual " -ketoglutarate, including those derived from electron transport/ oxidative phosphorylation? A. 10 B. 11 C. 12 D. 9 E. some other number 7. The portion of a phospholipid that contains the phosphorus group has at least one electrical charge. Because of this charge, this region of the molecule is said to be: A. nonpolar B. unsaturated C. hydrophobic D. hydrophilic E. green 8. Consider the inside part of a membrane. What kind of "forces" or "bonds" are the main
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MCDB_1A_MT1_B_White_3_ - Name _ TA _ MCDB 1A Midterm...

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