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homework_11 - Grodin Micah Homework 11 Due 11:00 pm Inst...

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Grodin, Micah – Homework 11 – Due: Apr 25 2006, 11:00 pm – Inst: Sara Sutcliffe 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points What is a natural antioxidant? 1. BHT 2. BHA 3. vitamin K 4. vitamin E 002 (part 1 of 1) 10 points The bonds that hold the nucleotides of a DNA chain together are 1. dipolar. 2. ionic. 3. covalent. 4. van der Waals. 5. hydrogen bonds. 003 (part 1 of 1) 10 points What is NOT a component of a nucleotide? 1. ribose 2. guanine 3. histadine 4. adenine 5. phosphoric acid 004 (part 1 of 1) 10 points Which of these structures is thymine? 1. O H 2 N N N H N N H 2. O O N H N H 3. N N H O NH 2 4. NH 2 N N N N H 5. N N H CH 3 O O H 005 (part 1 of 1) 10 points The α helix results from the pairing of specific bases by hydrogen bonding. Which pairs form hydrogen bonds? 1. AC and GC 2. AT and GC 3. AT, GC, AC, and GT 4. AC
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