(A) 2-Amino-3-mercaptopropanoic acid
(B) 2-Amino-3-methylbutanoic acid
(C) 2-Amino-3-hydroxypropanoic acid
(D) Amino acetic acid
Tag: Mcqs of Biochemistry
Sulphur containing amino acid is?
(A) Methionine
(B) Leucine
(C) Valine
(D) Asparagine
Since the pK values for aspartic acid are 2.0, 3.9 and 10.0, it follows that the isoelectric (pH) is?
(A) 3.0
(B) 3.9
(C) 5.9
(D) 6.0
pH (isoelectric pH) of alanine is?
(A) 6.02
(B) 6.6
(C) 6.8
(D) 7.2
The true statement about solutions of amino acids at physiological pH is?
(A) All amino acids contain both positive and
negative charges
(B) All amino acids contain positively charged
side chains
(C) Some amino acids contain only positive
charge
(D) All amino acids contain negatively charged
side chains
At neutral pH, a mixture of amino acids in solution would be predominantly:
(A) Dipolar ions
(B) Nonpolar molecules
(C) Positive and monovalent
(D) Hydrophobic
The optically inactive amino acid is?
(A) Glycine
(B) Serine
(C) Threonine
(D) Valine
Proteins contain?
(A) Only L- α – amino acids
(B) Only D-amino acids
(C) DL-Amino acids
(D) Both (A) and (B)