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

2. Which of the following options regarding an mRNA formed by bacterial transcription is correct? a. The transcription start site occurs a few bases before the start codon. b. The […]

1. A dachshund is a type of dog with short stature. Beagles are normal-sized. The progeny of a dachshund/beagle mating are all short-statured. Half of the puppies that are produced […]

15. Some carbonated beverages are made by forcing carbon dioxide gas into a beverage solution. When a bottle of one kind of carbonated beverage is first opened, the beverage has […]

14. In a unidirectional reaction, the conversion of molecules X to Y follows second-order rate kinetics. If the concentration of X increases by 3 times, what will be the change […]

13. The molecular formula for amino acid, glycine is C2H5O2N. What would be the molecular formulae for a linear peptide made by linking ten glycine molecules by condensation synthesis? a. […]

12. A kinesin motor moves at 1.8 μm/sec. If it is walking on a microtubule of 10 mm in length, how long will it take to cover the entire distance? […]

11. Protein ‘X’ contains 192 amino acids and mono-ubiquinated at two residues. What could be the probable molecular weight of the protein? [Molecular weight of ubiquitin is 8 kDa] a. […]

10. In the case of a Fluorescence Resonance Energy Transfer, the a. The “Energy donor” has a smaller excitation wave-length and “Energy acceptor” has a larger excitation wave-length b. The […]

9. What does allosteric inhibition of an enzyme by a ligand mean? a. The binding of a ligand to the enzyme inhibits the binding of cognate substrate at the same […]

8. The pair of following compounds is an example of a. Functional isomers b. Positional isomers c. Stereo isomers d. None Answer: The two given compounds are functional isomers (option a). They have […]