Exam 1 - Version Exam 1 Sathasivan (49750) G) H C H HO C C...

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Version – Exam 1 – Sathasivan – (49750) 1 This print-out should have 42 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points Which oF the the molecules A) H 2 C O C O H 2 C H 2 C H 2 C H 2 C H 2 C H 2 C H 3 C CH O C O CH 2 CH 2 CH 2 CH CH CH 2 CH 2 CH 3 CH 2 O P O O CH 2 CH 2 N - (CH 3 ) 3 B) C O OH C H H C H H C H H C H H C H H C H H C H H H C) O O O O O O O D) H HO CH 2 OH H H OH H H OH O O H OH CH 2 OH H H OH H H OH O E) HOCH 2 H OH H H OH H OH O F) H HO CH 2 OH H O H OH OH H H OH G) C OH H H C OH H C H HO C H HO C OH H C H O H) C OH H H C OH H C OH H C H HO C OH H C H O I) C CH 2 H 3 N + H C O O CH 2 S CH 3 J) C C H 3 C H H CH 3 K) P OH O O - L) C OH H H C OH H C OH H H M) C C CH 2 H 2 N H SH OH O N) C C N HC N C NH 2 N CH N H O) N H H C H H C OH O could be joined together by an ester linkage? 1. A and ± 2. B and L correct 3. K and N 4. G and H 5. I and O Explanation: Comprehension and application 002 10.0 points When an atom such as nitrogen that has fve
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Version – Exam 1 – Sathasivan – (49750) 2 electrons in its valence shell interacts with three atoms such as hydrogen with one elec- tron in their valence shells, it tends to form a molecule with 1. polar covalent bonds. correct 2. H-bonds 3. hydrophobic interactions. 4. non-polar covalent bonds. 5. ionic bonds. Explanation: 003 10.0 points How are the two strands of the DNA con- nected together? 1. by hydrogen bonds and van der Waals forces correct 2. by ionic bonds 3. by van der Waals forces 4. by hydrophilic attractions 5. attached through a phosphate to hold the strands together Explanation: Comprehension and recall 004 10.0 points Which molecule is an alcohol? 1. H C N H H H H 2. H C SH H H 3. H C C C H H H H O H 4. H C C OH H H H H correct 5. H C O P O - H H O O - Explanation: Comprehension and application 005 10.0 points What happens when a vegetable oil is hydro- genated? 1. The number of carbon atoms in the oil molecule decreases. 2. The oil becomes liquid at room tempera- ture. 3. The number of carbon-carbon double bonds in the oil molecules decreases. cor- rect 4. The number of carbon atoms in the oil molecule increases. 5. The ratio of carbon to hydrogen in- creases.
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Version – Exam 1 – Sathasivan – (49750) 3 Explanation: Hydrogenation adds hydrogens to the car- bon skeleton and the number of C-C double bonds decreases and the oil becomes solid at room temperature. 006 10.0 points Consider the structure HO H 3 C H 3 C H 3 C CH 3 What is it? 1. a protein 2. a cellulose molecule 3. a nucleotide 4. a steroid correct 5. a starch molecule Explanation: Steroids have four fused carbon rings and various functional groups attached to them.
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This note was uploaded on 11/17/2010 for the course BIO 311C taught by Professor Satasivian during the Spring '08 term at University of Texas at Austin.

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Exam 1 - Version Exam 1 Sathasivan (49750) G) H C H HO C C...

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