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Amino acids have different chemical properties that determine whether they are found on the surface of globular proteins. Which of the following series of amino acids is ordered according to […]

Which of the following techniques can be used to identify a post-translational modification such as phosphorylation or methylation of a protein, and the residue where it is modified? 2-D gel […]

In a human family, the father and the mother are carriers for an autosomal recessive disease. One of their sons is phenotypically normal. What is the probability that this son […]

The Michaelis-Menten equation can be represented as follows: v = Vmax. [S]/1 + [S]/Km For an intracellular enzyme to function optimally, which of the following statements regarding intracellular substrate concentration […]

If a branched polysaccharide (e.g. amylopectin) has 7 branch points, how many free -OH ends are available for reduction? 7 1 6 0 The correct answer is 1. In amylopectin, […]

A tyrosine-to-histidine mutation in the active site of an enzyme significantly affects its activity. The reaction is likely to be Acid-catalysed Base-catalysed Free radical-catalysed None of the above A tyrosine-to-histidine […]

Select one of the below sets in which all the molecules show a microwave rotational spectrum? H2, CH4, SF6 HCl, CH3Cl, CH2Cl2, H2O H2, HCl, CH4, CH3Cl CH2Cl2, H2O, SF6 […]

If you have a polypeptide of size 11 kilo Daltons, what would be the mass of the open reading frame that codes for the polypeptide? The average mass of an […]

Phosphoric acid is tribasic with three pKa values of 2.14, 6.86, and 12.4, respectively. The ionic form of the acid that predominates at pH 3.2 is: PO43- HPO42- H2PO4- H3PO4- […]

When the velocity of enzyme activity is plotted against substrate concentration, which of the following is obtained? Hyperbolic curve Parabola Straight line with positive slope Straight line with negative slope […]