BIO4 - Howard(clh2528 Homework 4 sathasivan(48985 This...

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Howard (clh2528) – Homework 4 – sathasivan – (48985) 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points A type oF protein that Functions by helping other proteins to Fold correctly is called a 1. chaperonin. correct 2. Foldzyme. 3. renaturing protein. 4. denaturing protein. 5. hemoglobin. Explanation: 002 10.0 points What could be an objective oF using poly- acrylamide gel electrophoresis in molecular biology? 1. To separate the major organelles so their particular Functions can be determined 2. To identiFy the enzyme 3-D structure 3. To view the structure oF cell membranes 4. To crack the cell wall oF animal cells so the cytoplasmic contents can be released 5. To determine the size oF various proteins correct Explanation: 003 10.0 points The “backbone” oF nucleic acid molecules is made oF 1. alternating sugars and phosphate groups. correct 2. nucleosides. 3. pyrimidines. 4. nitrogenous bases. 5. purines. Explanation: 004 (part 1 of 2) 10.0 points Consider the Following molecules C C CH 3 H 3 N + H C O - O Alanine (Ala) C C H H 3 N + H O - O Glycine (Gly) C C CH 2 H 3 N + H C O - O CH CH 3 H 3 C Leucine (Leu) C C CH H 3 N + H O - O H 3 C CH 2 CH 3 Isoleucine (Ile) C C CH 2 H 3 N + H C O - O CH 2 S CH 3 Methionine (Met) C C CH 2 H 3 N + H O - O NH Tryptophan (Trp) C H O - O C CH 2 H 2 C H 2 N + CH 2 Proline (Pro) C C CH H 3 N + H C O - O CH 3 H 3 C Valine (Val)
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Howard (clh2528) – Homework 4 – sathasivan – (48985) 2 C C CH 2 H 3 N + H O - O Phenylalanine (Phe) If a mutation in the DNA resulted in chang- ing a critical amino acid from leucine to isoleucine, in a globular protein, what will happen to the position of this amino acid in relation to the protein placed in either aque-
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This note was uploaded on 03/22/2011 for the course BIO 311C taught by Professor Satasivian during the Spring '08 term at University of Texas.

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BIO4 - Howard(clh2528 Homework 4 sathasivan(48985 This...

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