exam 1a - BIOL/CHEM 3361 Spring 2011 Name_ EXAM I FORM A...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIOL/CHEM 3361 Name__________________________ Spring 2011 EXAM I FORM A Place your name at the top of this page of the exam. On the F-1712 Scantron form, use a no. 2 pencil to enter your test form designation, i.e., A or B. Also print and encode your name and your UTD ID (starting in the first column on the left and leaving the last spaces blank). Leave phone number, code and subject score sections blank. Select the best answer for the following multiple-choice questions and enter the corresponding letter on the Scantron sheet. You may use these test pages to make notes and work problems. You may use a non-graphing calculator or a graphing calculator you have cleared of all stored data. When finished, turn in this exam along with your Scantron sheet. 1. Which of the following amino acids would be the most conservative replacement for a phe residue in a protein, and thus least likely to change the protein’s structure and activity? a. glu b. his c. arg d. gly e. tyr 2. Which of the following serves as the blood and interstitial fluid buffer? a. ATP-phosphate system b. sulfate c. CO 2 -bicarbonate system d.histidine e. thiol 3. The energy of an Individual H-bond is about a. 0.2 kJ/mol b. 5 kJ/mol c. 400 kJ/mol d. -25 kJ/mol e. -50 kJ/mol 4. Which of the following amino acid side chains is not amphipathic (aka amphiphilic) a. serine b. aspartic acid c. valine d. glutamine e. lysine 5. Which of the following amino acids has a side chain that can form hydrogen bonds? a. serine b. glycine c. isoleucine d. valine e. alanine
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6. Which of the following amino acids has a side chain that can participate in charge-charge interactions? a. S b. N c. I d. H e. A 7. When non-polar molecules are dissolved in water, which of the following is true? a. The normal clathrate structure of water is broken up b. Charge-dipole interactions hold the molecules in solution c. The entropy of the system increases d. H-bonds form between the non-polar molecules and water e. H 2 O forms a clathrate-like structure around the non-polar molecules 8. Which of the following properties characterize glycine ? a. has no D and L stereoisomers. b. is the smallest amino acid. c. forms H-bonds with its side chain
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

exam 1a - BIOL/CHEM 3361 Spring 2011 Name_ EXAM I FORM A...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online