Biophysical Chemistry – MCQs

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1. Biophysical chemistry is primarily concerned with:





2. The study of molecular interactions and thermodynamics in biological systems falls under:





3. The Gibbs free energy change (ΔG) for a spontaneous reaction is:





4. The van’t Hoff equation relates:





5. Entropy (ΔS) is a measure of:





6. The Boltzmann constant (kB) relates:





7. The Arrhenius equation describes the effect of:





8. A protein’s denaturation is often caused by:





9. Calorimetry in biophysical chemistry measures:





10. Isothermal titration calorimetry (ITC) is used for:





11. Differential scanning calorimetry (DSC) measures:





12. The Michaelis constant (Km) in enzyme kinetics represents:





13. Lineweaver–Burk plot is used in:





14. Protein-ligand interactions can be studied by:





15. Fluorescence quenching is commonly used to study:





16. FRET is useful in:





17. Chemical potential (μ) represents:





18. Osmotic pressure is directly proportional to:





19. Raoult’s law relates:





20. Colligative properties depend on:





21. Hydrogen bonds are important in:





22. Hydrophobic interactions play a major role in:





23. Quantum mechanics is applied in biophysical chemistry to study:





24. The Beer–Lambert law relates absorbance to:





25. Absorbance spectra can be used to study:





26. Circular dichroism spectroscopy is useful in:





27. Electrophoresis separates molecules based on:





28. The Nernst equation relates:





29. In biological membranes, lipid bilayers form due to:





30. Ultracentrifugation separates biomolecules by:





31. Fluorescence anisotropy can measure:





32. Quantum yield in fluorescence is defined as:





33. In enzyme kinetics, turnover number (kcat) represents:





34. Free energy of binding is related to:





35. Protein-ligand binding affinity is expressed as:





36. In spectrophotometry, λmax refers to:





37. Förster radius in FRET is defined as:





38. pKa of an amino acid group indicates:





39. Buffers resist changes in:





40. Henderson–Hasselbalch equation relates:





41. Electrophoretic mobility depends on:





42. The principle of chromatography relies on:





43. Fluorescence lifetime measurements provide:





44. Protein unfolding transitions can be monitored by:





45. A high Kd value indicates:





46. In enzyme kinetics, Vmax represents:





47. Diffusion of solutes across membranes follows:





48. The Debye–Hückel theory describes:





49. Surface plasmon resonance (SPR) is used for:





50. Biophysical chemistry combines principles of: