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Unformatted text preview: Biochemistry I CH1515 Dr. Bert Silverman
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1.What is a nosocomial disease ?
A)no one knows
B)caused by a physician or other doctor in healthcare
C)contracted in a hospital
D)resulting from the patient being a sociopath 2.Nonprotein amino acids:
A)are usually nonessential amino acids
B)are coded for by DNA
C)are usually essential amino acids
D)are not coded for by DNA 3.Ishkabibblease has a pI of pH3. What is its net charge in the stomach?
D)not enough information to answer the question 4.Whatsitsname is an oligomeric protein. It:
A)has only one polypeptide chain
B)must be a fibrous protein
C)must be a globular protein
D)must have more than one polypeptide chain 5.Denatured proteins:
A)are not stereospecific
B)can always be renatured
C)can never be renatured
D)are stereospecific 6.Which type of protein is most likely to contain disulfide bonds?
Page 1 Exam 1 Biochemistry I CH1515 Dr. Bert Silverman 2008 Practice Questions
Posted To Blackboard Exam 1 C)globular proteins
D)conjugated proteins 7.Micelles are formed when:
A)hydrophobic regions of proteins are sequestered from water.
B)hydrophobic regions of phospholipids are sequestered from water.
C)any family of molecules is sequestered in an aqueous solution.
D)hydrophilic regions of any family of molecules are sequestered from water. 8.The prosthetic group in hemoglobin is:
D)a globular protein 9.Which is a polar amino acid without a discrete charge?
D)phenylalanine 10.Which amino acid will have at least three pKa's?
D)any nonstandard amino acid 11.D-amino acids are :
A)a special class of essential amino acids
B)sometimes used to make unusual proteins in the body
C)never used to make proteins in the body
D)a special class of nonessential amino acids
Page 2 Biochemistry I CH1515 Dr. Bert Silverman 2008 Practice Questions
Posted To Blackboard Exam 1 12.The cumulative effect of many Hydrogen Bonds results :
A)in sequestered hydrophobic regions found in globular proteins.
B)in a strong system such as the DNA double helix.
C)in a weak system such as the DNA double helix.
D)water having a much lower boiling point than expected. 13.A lipoprotein is:
A)a simple protein.
B)a conjugated protein.
C)always an enzyme.
D)always a fibrous protein. 14.Where would phenylalanine usually be found in the tertiary structure of a protein?
A)On the inside.
B)Equally on the inside and the outside.
C)I have no idea, let's do this again next quarter.
D)On the outside. 15.Ishkabibble is a monomeric protein containing 212 amino acids. At physiological
conditions, how many negative charges on this protein are from the common
structures of its amino acids ?
C)a large number since it contains 212 amino acids
D)there is not enough information provided to answer this question 16.Inateabibble is an amino acid with a pKa at pH 4 and a second one at pH 8. It's pI
D)without a titration curve, the pI cannot be determined. Page 3 Biochemistry I CH1515 Dr. Bert Silverman 2008 Practice Questions
Posted To Blackboard Exam 1 17.Which of these would be the best key ingredient of a low-calorie food ? (Ignore
upper/lower case in answer choices)
A)an L-amino acid which tastes very sweet
B)a D-amino acid which tastes very sweet
C)either an L-amino acid or a D-amino acid if both are very sweet
D)a D-monosaccharide which tastes very sweet Page 4 ...
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This note was uploaded on 11/21/2011 for the course CHEM 1515 taught by Professor Bertsilverman during the Summer '10 term at Life Chiropractic College West.
- Summer '10