MDCAT Biology MCQ #771

In the secondary structure of a globular protein, the alpha-helix is completed by how many amino acids per turn of the spiral?

MDCAT Biology MCQ #771

  1. Question 1

    Q1. In the secondary structure of a globular protein, the alpha-helix is completed by how many amino acids per turn of the spiral?

    • A) 3.6 amino acids
    • B) 3.4 amino acids
    • C) 2.6 amino acids
    • D) 4.2 amino acids

    Answer: 3.6 amino acids

    Explanation: The alpha-helix is stabilized by hydrogen bonds and contains 3.6 amino acids per turn, while 3.4 is the DNA pitch in Angstroms.