Which of the following statements about the molecular architecture of DNA is true?
A) The two strands run in opposite directions.
B) The molecule's twist is right-handed.
C) The molecule is a double-stranded helix.
D) It has a uniform diameter.
E) All of the above

Question

Quizplus · Accepted Answer

A) The two strands run in opposite directions: This is true, and is known as antiparallel orientation. One strand runs 5' to 3' and the other runs 3' to 5'.
B) The molecule's twist is right-handed: This is true, meaning that if you were to turn a DNA molecule counterclockwise, the strands would be moving away from you in a clockwise direction.
C) The molecule is a double-stranded helix: This is also true. The two strands are twisted around each other to form a helix structure.
D) It has a uniform diameter: This is false. The diameter of DNA is not consistent throughout its structure.

Which of the Following Statements About the Molecular Architecture of DNA