MCQs Mock Test for Lab Technicians and Technologists: Chapter 107

One of the given example is an amino acid:

Formation of melanin from tyrosine requires the action of

All amino acids are optically active except

The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin:

Which one of the amino acids could serve as the best buffer at pH 7?

The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ?

The integrator between the TCA cycle and urea cycle is

The first amino acid incorporated in a polypeptide in a ribosome of a human is

The ionizable groups of amino acids are at least.

A growing peptide in a ribosome can not be shifted to the adjacent ribosome because

The amino acid which synthesizes many hormones:

Tetra hydroglolate can be freed from N5 methyl tetrahydrofolate only by

In the synthesis of 1 molecule of urea in the Kreb’s Hanseleit cycle, the number of ATPs required is

Transmethylation of guanido acetic acid gives

Amino acids are insoluble in

Which one of the following statements concerning glutamine is correct?

Out of 200 different amino acids form in nature the number of amino acids present in protein:

The neutral amino acid is

The only known physiological methylating agents in the animal organism are

The major end product of protein nitrogen metabolism in man is

The 2 energy rich compounds needed for protein biosynthesis are

Citrulline is an intermediate of

Xanthuric acid is an abnormal metabolite of

Which of the following techniques is used to separate proteins based upon differences in their mass?

For biosynthesis of proteins

An amino acid not involved in urea cycle is

Bence jones proteinurial characterized by

The highest concentration of cystine can be found in

Bence Jones proteins may be excreted in urine of patients suffering from

The metabolite which sustains urea cycle is

The first amino acid incorporated in a polypeptide in a ribosome of a bacterium is

The reference compound for absolute configuration of optically active compound is

The body protein after eighteen years

Enzyme catalyzed hydrolysis of proteins produces amino acids of the form:

The following ketoacid is involved in fixing dietary NH3 into amino acid:

In one of the following the quality of the protein synthesized is affected:

The semialdehydes are formed under the action of enzymes characterised as

The amino acid containing hydroxyl group:

Optically active compounds are capable of

Which of the following statement about the peptide bond is true?

Neogenesis of methyl group is

In humans, NH3 is detoxified in liver as

Pyruvic acid can be obtained by transamination of alanine with

Isoenzymes for a given reaction

The basic amino acid:

More creatinine is excreted by

One round of Edman degradation of the peptide: H2N— Gly—Arg—Lys—Phe— Asp— COOH would result in which of the following structures or their phenyl isothiocyanate derivatives?

The sulphur containing amino acid:

NH3 is detoxified in brain chiefly as

The amino acid which is not optically active is