MCQ Book Questions

Q50520. All the standard amino acids except the following have one chiral ‘c’ atom:

Q50521. The role of complement proteins:

Q50522. Optical isomers that are mirror images and non superimposable are called

Q50523. Living cells have the unique ability to synthesize only _________ the form of optical isomer due to _________.

Q50524. Isoelectric pH of an amino acid is that pH at which it has a

Q50525. Albuminoids are similar to

Q50526. Abnormal chain of amino acids in sickle cells anaemia is

Q50527. In prehepatic jaundice, protein floccula- tion test is

Q50528. Side chains of all amino acids contain aromatic rings except

Q50529. In Nitroprusside test, amino acid cystein produces

Q50530. Bonds that are formed between two cysteine residues is

Q50531. The acid amide of Aspartic acid is

Q50532. It is the only amino acid having an ionizing ‘R’ group with a pK’ near 7 and is important in the active site of some enzymes:

Q50533. Hemoglobin has a high content of this amino acid:

Q50534. A hexa peptide with 5 aspartic acid would have a net charge at pH 7:

Q50535. In the genetic disorder of cystinuria, the patient excretes large quantities of cystine in their urine and its low solubility causes crystalline cystine to precipitate as stones in kidneys. The remedy involves MCQs IN BIOCHEMISTRY 56 ingesting Na HCO3. Reaction of this treatment is

Q50536. In the following reaction, Alanine acts as a 3 3 3 3 + + → H H | | H N – – COO —— H N – – COOH C C | | CH CH

Q50537. Amino acids excepting histidine are not good buffering agents in cell because

Q50538. At neutral pH Alanine has the following structure:

Q50539. The amino acids in which the R groups have a net positive charge at pH 7.0 are