Question 1 : Which of these statements is incorrect?
Aldehyde, ammonia and carbon monoxide are products of Ninhydrin reaction
Amino acids are insoluble in non-polar solvents
Amino acids behave like ions in solution.
Amino acids react with alcohols to form esters
Question 2 : Amino acids that occur in conjugated forms as components of proteins are called
Common amino acids
Natural amino acid
Uncommon amino acids
Conjugate amino acids
Question 3 : Which of these reactions is peculiar to the indole-ring of tryptophan?
Reaction with formaldehyde
Question 4 : How many functional groups are in a typical amino acid?
Question 5 : When cysteine reacts with iodoacetate, one of the products formed is _______________.
Question 6 : What is the pH of an acid buffer solution containing 0.1 M sodium ethanoate and 0.1 M ethanoic acid with Pka 4.8?
Question 7 : Amino acid polymers with molecular weight greater than 10,000 are called _____________.
Question 8 : In the prsence of a strong acid amino acids react with alkanol to give one of the following
Question 9 : The structures of the common amino acids are similar except with respect to their
Question 10 : All but one of these amino acids is optically active.
Question 11 : Which of these amino acids will form red complexes with Million's reagent
Question 12 : Which of these amino acids will form give a yellow coloration with concentrated nitric acid
Question 13 : Two cysteine molecules form ________________.
Question 14 : Which class of protein are known as first-class proteins?
Question 15 : Which of these uncommon amino acids is a constituent of penicillin antibiotics?
Question 16 : Which of the following is useful in spectrophotometric measurement of amino acids?
Question 17 : One of these is a transport protein.
Question 18 : One of these amino acids reacts with formaldehyde with sulphuric acid to give a bluish-purple colouration
Question 19 : What is the symbol of Aspartate?
Question 20 : What is the catalyst involved in the xanthoproteic reaction of aromatic ring of phenylalanine?
Manganese IV Oxide
Sulphur IV Oxide