Which of the following holds the alpha helix of protein in its place?
Correct answer: A. Hydrogen bond
- A. Hydrogen bond
- B. Amino group
- C. R-group
- D. Disulphide bond
Explanation
The a-helix is a very uniform geometric structure with 3.6 amino acids in each turn of the helix. The helical structure is kept by the formation of hydrogen bonds among the amino acids molecules in successive turns of the spiral.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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