You are absolutely correct! The sugar-phosphate backbones of the DNA double helix are oriented in opposite directions. This is known as antiparallel orientation.

Here's why this is important:

* Base Pairing: The antiparallel arrangement allows for complementary base pairing between the two strands. One strand runs 5' to 3', while the other runs 3' to 5'. This means that the nitrogenous bases can pair up correctly (adenine with thymine, guanine with cytosine).

* Stability: The antiparallel arrangement contributes to the overall stability of the DNA double helix. The opposing directions of the strands create a more stable and compact structure.

Let me know if you'd like a visual representation of this!