Question

a distinctive feature of eukaryotes is the organization of tightly packaged chromosomal dna with proteins into a membrane - bound structure called a multiple choice cell. nucleus. nucleolus. plasma membrane.

Explanation:

Eukaryotes have their chromosomal DNA packaged with proteins into a membrane - bound structure called the nucleus. A cell is the overall unit, the nucleolus is a sub - structure within the nucleus, and the plasma membrane is the outer boundary of the cell, not the structure housing the DNA.

Answer:

B. nucleus