Dual Enrollment Biology Practice Test 2026 - Free Biology Practice Questions and Study Guide

Eukaryotic cells organize their genetic material inside a nucleus and use linear DNA packaged into chromosomes, while also containing many membrane-bound organelles such as mitochondria and the endoplasmic reticulum. This means most of the genome is linear DNA housed in the nucleus, not circular DNA in the cytoplasm. Mitochondria do have their own circular DNA, but it’s a separate, small genome from the main nuclear genome. The statement that describes a nucleus with linear DNA and numerous membrane-bound organelles captures this organization, making it true. The other options mix up where DNA is located or its form, which doesn’t match how eukaryotic cells are structured.