In eukaryotic cells, the part of the cell in which the genetic material is separated from the rest of the cell by a plasma membrane.

In eukaryotic cells, the part of the cell in which the genetic material is separated from the rest of the cell by a plasma membrane.

• A. Cytoplasm
• B. Nucleus
• C. Mitochondria
• D. Endoplasmic reticulum

Answer: (B)

Genetic material in eukaryotic cells is housed in a membrane-bound compartment that keeps DNA separate from the rest of the cell. This compartment is the nucleus, which is enclosed by the nuclear envelope—a double membrane with nuclear pores that regulate traffic between the nucleus and the cytoplasm. This separation allows DNA storage and transcription to occur in a controlled environment distinct from other cellular processes. The cytoplasm is simply the cell's interior outside the nucleus; mitochondria contain some DNA but are separate organelles, not the main container for the cell’s genetic material; and the endoplasmic reticulum is a membrane network involved in synthesis and transport, not the primary enclosure for DNA.

Genetic material in eukaryotic cells is housed in a membrane-bound compartment that keeps DNA separate from the rest of the cell. This compartment is the nucleus, which is enclosed by the nuclear envelope—a double membrane with nuclear pores that regulate traffic between the nucleus and the cytoplasm. This separation allows DNA storage and transcription to occur in a controlled environment distinct from other cellular processes. The cytoplasm is simply the cell's interior outside the nucleus; mitochondria contain some DNA but are separate organelles, not the main container for the cell’s genetic material; and the endoplasmic reticulum is a membrane network involved in synthesis and transport, not the primary enclosure for DNA.