Tag: TIFR Previous Year Question Papers Biology PYQ With Answer Key Download

Which of the following statements explains why net primary productivity is higher near the tropics? More predators in the tropics kill herbivores, increasing plant growth in the tropics Increased species […]

Human DNA contains 18% C on a molar basis. What is the mole percentage of A, G, and T respectively? 32, 18, 32 18, 32, 32 32, 32, 18 Insufficient […]

You synthesise a short peptide [AMxVFxGNxM], where x is any amino acid with a charged side chain. How many possible peptides can be synthesised? 15 243 125 27 How Many […]

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 […]