Question QFB1 : The group of enzymes that cleave without the addition of water is known as ______
Question QFB2 : Low molecular weight organic substances which enzymes could require for their catalytic activities are known as ____
Question QFB3 : The enzyme substrate theory in which the enzymes undergoes a conformation change to which the substrate binds is known as ____________
Answer: induced fit theory
Question QFB4 : The pH of a solution with hydrogen ion concentration of 0.0001 M is ______________.
Question QFB5 : The basic distinguishing feature between peptide and protein is in respect to their ___________.
Answer: Molecular weight
Question QFB6 : A _______ centre is a carbon atom to which four different functional groups are covalently linked.
Question QFB7 : When an amino acid rotates the plane polarised light to the right is said to be __________
Question QFB8 : Complete the given equation.
Question QFB9 : An enzyme with code [EC 126.96.36.199 ] belongs to the class of enzymes called _______
Question QFB10 : A complete catalytically active enzyme together with its bound co-enzyme and/or metal ion is called _______
Question QFB11 : ________ are biopolymers of amino acids in which amino acids are joined by peptide bonds.
Question QFB12 : The presence of a red colour with Millon’s Reagent indicates the presence of the amino acid _______
Question QFB13 : The enzyme with code. [EC 188.8.131.52] belongs to the class _________
Question QFB14 : The part of an amino acid that gives it its unique property is the ___________
Answer: side chain
Question QFB15 : The pH of a solution with 0.82 M hydrogen ion concentration is ______________.
Question QFB16 : Calculate the pH of a solution with hydrogen ion concentration of 0.00456 M to the nearest whole number __________
Question QFB17 : Give the name of the amino acid with the given structure_________
Question QFB18 : Calculate the pH of a buffer solution which is 0.05 M in sodium acetate and 0.1 M in acetic acid. The for acetic acid is 4.73 _______
Question QFB19 : The α- carbon in the amino acid lysine can also be referred to as in Arabic numeral as carbon atom ______
Question QFB20 : How many peptide residues are present in Glutathione?
Question QFB21 : A solution that resists slight changes in pH when little amount of acid or base is added to it is known as __________
Answer: Buffer solution
Question QFB22 : In a linear peptide polymer, the end of the linear polymer with free α- amino group is known as _____-
Answer: N terminal
Question QFB23 : How many amino acid residues are present in the peptide hormone oxytocin?______
Question QFB24 : The first protein to be sequenced was_______
Question QFB25 : Enzyme activity in the enzyme takes place an area known as _________
Answer: Active site
Question QFB26 : A widely used sequencing procedure that identifies amino acids singly, beginning with the N-terminal residues inwards is known as___________
Answer: Edman Degradation
Question QFB27 : Name the amino acid that gives a red coloured compound in Sakaguchi Reaction ________
Question QFB28 : Name the amino acid represented by the given structure_________
Question QFB29 : Name the amino acid represented by the given structure________
Question QFB30 : In the formation of peptides, amino acids are linked together in a covalent bond known as ______
Answer: Amide linkage
Question QFB31 : In Gel filtration protein molecules are separated based on their shapes and _____
Question QFB32 : The side chain in alanine is replaced with __________.
Answer: Methyl group
Question QFB33 : __________ are the building blocks of proteins.
Answer: Amino acids
Question QFB34 : The pigment responsible for coloration in the skin
Question QFB35 : How many functional groups are typical of an amino acid has __________.
Question QMC1 : One of these amino acid has an isopropyl R group _______
Question QMC2 : When phenylalanine is available in the body, which of these amino acids can readily be formed?
Question QMC3 : Lack of one of these amino acids in the diet will affect the synthesis of a new protein
Question QMC4 : Which of these amino acids is present in a test sample that gives a red colouration with Millions reagent?
Question QMC5 : Which of these amino acids has an aliphatic side chain terminating with a basic group
Question QMC6 : Which of the following is not true of the buffer action?
Question QMC7 : Calculate the pKa of lactic acid given that at pH 4.8, the concentration of lactic acid and its conjugate base is 0.001 and 0.087 M respectively.
Question QMC8 : One of these statements is NOT true of amino acids
Question QMC9 : Which of these amino acid will absorb light most strongly in the ultraviolet region(λ=100 to 400 nm)
Question QMC10 : One of these amino acids will give a red coloration in Sakaguchi reaction
Question QMC11 : For an amino acid to be an alpha amino acid, which of these must be true?
Question QMC12 : Which of the following may be formed when free α-amino groups of amino group react with aldehydes?
Question QMC13 : Amino acids are considered amphoteric for one of the following reasons
Question QMC14 : Which of these amino acids contain sulphur?
Question QMC15 : One of these amino acids has an OH side chain
Question QMC16 : Which of these is not a criterion for the classification of common amino acids?
Question QMC17 : Which of these amino acid will not rotate the plane of a plane-polarised light
Question QMC18 : Which of these can be achieved with Xanthoproteic Reactions of amino acids
Question QMC19 : Which of these amino acids does NOT give a purple colour with Ninhydrin
Question QMC20 : The bluish- purple compound appearing as ring at the interface in the reaction of tryptophan with formaldehyde in the presence of Sulphuric acid is due to the presence of________
Question QMC21 : How many stereoisomers of the amino acid, Alanine, are possible given that number of stereoisomers is 2n? Where n is the number of chiral carbons present.
Question QMC22 : Which of these is not a part of the Henderson-Hasselbalch equation ?
Question QMC23 : Which of these proteins is a structural protein found in hair of animals?
Question QMC24 : Which of these proteins is involved with vision?
Question QMC25 : One of these statements is NOT of proteins
Question QMC26 : All but one of these are types of gel materials used in gel filtration :
Question QMC27 : Which of these methods can be used to separate protein based on their Molecular size?
Question QMC28 : Which of these phenomena is employed in dialysis to separate macromolecules from solvents with the aid of semi permeable membranes like cellophane
Question QMC29 : What protein is found in Plastocyanin?
Question QMC30 : Which of these proteins is involved in motion?
Question QMC31 : Enzymes have the following characteristic EXCEPT
Question QMC32 : Which of these functional groups gives each amino acid its identity
Question QMC33 : Which of these amino acids is an intermediate in urea formation?
Question QMC34 : Which of these amino acids is a hormone?
Question QMC35 : One of these separation techniques employs the differences in pH in separation proteins