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← ScienceWhat outcome occurs when an energetic free electron approaches a protein molecule?
A)Molecular bond vibrational excitation occurs✓
B)Protein molecule alpha helix unwinds
C)Increased hydrostatic internal pressure results
D)Solvent dielectric constant is reduced
💡 Explanation
Molecular bond vibrational excitation occurs inside the protein near the electron’s impact site because the electron undergoes inelastic scattering exciting the bonds and depositing energy directly. Therefore the electron transfers kinetic energy to vibrational, rather than causing gross structural change
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