BMB401 F03 T1

BMB401 F03 T1 - I, (Name) _ have neither received nor given...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
I, (Name) _________________________________________ have neither received nor given help BMB 401/506 – Fall 2003 First Examination September 23, 2003 During this exam you should not be in possession of a beeper or a cellular phone. Please place your beeper or cellular phone in your book bag (after you turn it off!!) and place the bag against the wall of the room. You can only use calculators that do not have memory capabilities for alphabetic characters. Other calculators should also be placed in your bag. THESE ARE STANDARD SINGLE ANSWER MULTIPLE CHOICE QUESTIONS. THE POSSIBLE ANSWERS ARE LABELED A, B, C, D AND E. SELECT THE SINGLE BEST ANSWER AND MARK THE APPROPRIATE CIRCLE ON THE SCANTRON ANSWER SHEET. Bubble in your name and ID# (C# please). There are 45 questions. You will receive full credit for 42 correct answers. 1. Hydrophobic interactions can best be characterized as: A. Interactions between opposite charges B. Interactions between water molecules ions in solution C. Interactions between polar groups and water D. Interactions between nonpolar and polar groups E. Interactions between nonpolar groups 2. Which of the following is true regarding protein structures? A. They are highly stable and rigid B. They are disrupted by denaturants such as urea and sodium dodecylsulfate C. They never contain non-polypeptide components D. Most peptide bonds have a cis configuration 3. The separation of proteins by sodium dodecylsulfate polyacrylamide gel electrophoresis is based upon differences in: A. Molecular weight of the native protein B. Charge/mass ratio C. Isoelectric point D. Molecular shape E. Subunit size 4. A protein of molecular weight 110,000 daltons would contain approximately: A. 750 amino acid residues B. 1000 amino acid residues C. 1250 amino acid residues D. 1500 amino acid residues E. 2200 amino acid residues 5. Quaternary structure of a protein is defined as: A. The ordered organization of secondary structures within a protein B. The overall ordered array of amino acids within a protein C. The structure obtained through interactions between different subunits of proteins D. The structure obtained through interactions of tertiary structures within proteins E. None of the above 6. Which of the following is the most important determinant of tertiary structure? A. H-bonding B. Hydrophobic interactions C. Van der Waals interactions D. Disulfide bond formation E. Electrostatic interactions 7. Membrane lipids are hydropathic because: A. They all contain head groups with a net charge B. They all contain polar head groups C. They all contain head groups with a net charge and hydrophobic tail groups D. They all contain polar head groups and hydrophobic tail groups 8. Which ONE of the following is an exopeptidase? A.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

BMB401 F03 T1 - I, (Name) _ have neither received nor given...

This preview shows document pages 1 - 2. Sign up to view the full document.

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