a- helices are secondary structures characterized by:

Correct answer: A. Intermolecular hydrogen bonds

  • A. Intermolecular hydrogen bonds
  • B. Disulfide bonds
  • C. A rippled effect
  • D. Hydrophobic Interactions

Explanation

A. a-helix and beta pleated sheets have hydrogen bonding so Option A is correct.B. Disulfide bonds is present in tertiary structure of proteins.C. Rippled effect has nothing to do with the structure of proteins.D. Hydrophobic interactions are present in quaternary structure of proteins.

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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.

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