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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 […]

7. The two strands of DNA double helix are linked to each other by a. Hydrogen bonds between sugar b. Phosphodiester bond between sugar c. Hydrogen bonds between bases d. […]

6. Which is a better electrophilic center? a. CH3(CO)CH3 b. CH3(CO)Cl c. CH3(CO)H d. CH3(CO)Br CH3COCl (acetyl chloride) serves as the best electrophilic center among the options due to chlorine’s […]

5. During the process of oxidative phosphorylation, which molecule acts as the terminal electron acceptor. a. Hydrogen b. Phosphate c. Water d. Oxygen Oxygen acts as the terminal electron acceptor […]

4. The pKa of the amino group of a zwitterion is 9.6. In a 0.1 M solution of the zwitterion at pH=9.0, what percentage of the amino group of the […]

3. Which enzyme can be a catalyst like perchloric acid in Baeyer-Villiger reaction a. trypsin b. flavin monoxygenase c. chymotrypsin d. alcohol dehydrogenase Introduction The Baeyer-Villiger reaction enzyme catalyst mimics […]