BIOC1430 Midterm Exam Questions Complete With A+ Graded Answers (Updated To Pass!!)
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Course
Biochem
Institution
Biochem
Which of the following amino acids would most likely be soluble in a non polar solvent such as benzene?
A) Valine
B) Histidine
C) Glutamine
D) Glycine
E) All of the above - Correct Answer Valine
What would the overall charge of the following peptide sequence at pH 1 be (Aps-Gly-Arg-His)?
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BIOC1430 Midterm Exam Questions Complete With A+
Graded Answers (Updated To Pass!!)
Which of the following amino acids would most likely be soluble in a non polar solvent such as benzene?
A) Valine
B) Histidine
C) Glutamine
D) Glycine
E) All of the above - Correct Answer Valine
What would the overall charge of the following peptide sequence at pH 1 be (Aps-Gly-Arg-His)?
A)-1
B) 0
C) 1
D) 2
E) 3 - Correct Answer 3
What charged group(s) are present in glycine at a pH of 7?
A)-NH3+
B)-COO-
C) -NH2+
D) A and B
E) A, B, and C - Correct Answer A and B
Which amino acids contain reactive aliphatic hydroxyl groups?
A) Serine and threonine
B) Cysteine and threonine
C) Cysteine and methionine
D) Serine and methionine
,E) Methionine and threonine - Correct Answer Serine and threonine
In what pH range is zwitterionic alanine the predominant structure?
A) 2-9
B) 8-10
C) 9-14
D) 2-3
E) 0-2 - Correct Answer 2-9
Which amino acid has a side chain with a hydroxyl group?
A) Tryptophan
B) Alanine
C) Serine
D) Histidine
E) Glutamine - Correct Answer Serine
Where are Trp and The found in globular protein and why?
A) Exterior forming polar H-bonds with water
B) Exterior due to the hydrophilic effect
C) Interior forming ionic bonds with other amino acids
D) exterior forming ionic-polar bond with water
E) Interior due to the hydrophobic effect - Correct Answer Interior due to the hydrophobic affect
Amino acids contain all of the following functional groups except:
A) Sulfhydryl
B) Thioester
C) Amine
D) Phenyl
E) Indole - Correct Answer Thioester
, At a pH of 12, what charged group(s) is/are present in glycine?
A)-NH3+
B)-COO-
C) -NH2+
D) A and B
E) A, B, and C - Correct Answer -COO-
Name two amino acids that are positively charged at neutral pH
A) Cysteine and arginine
B) Histidine and arginine
C) Lysine and proline
D) Glutamine and histidine
E) Lysine and arginine - Correct Answer Lysine and arginine
Which amino acid has a carboxyl group in its side chain?
A) Glutamine
B) Galanine
C) Cysteine
D) Glutamate
E) None of the above - Correct Answer Glutamate
What would interactions between side chains of aspartate and arginine and neutral pH be?
A) Ionic
B) Covalent
C) Steric
D) Hydrogen bonding
E) Hydrophobic - Correct Answer Ionic
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