Which term describes a cell structure that houses the genetic material and is surrounded by a double membrane in eukaryotic cells?

Which term describes a cell structure that houses the genetic material and is surrounded by a double membrane in eukaryotic cells?

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

Answer: (B)

In eukaryotic cells, the structure that houses the genetic material is the nucleus. It is enclosed by a double membrane known as the nuclear envelope, with nuclear pores that regulate what enters and exits. Inside the nucleus, DNA is organized into chromosomes, and this separation from the rest of the cell allows controlled replication and transcription of genes. The endoplasmic reticulum is a membrane network involved in synthesizing proteins and lipids; the cytoplasm is the jelly-like fluid where many metabolic activities happen outside the nucleus; and mitochondria are energy producers that contain some DNA but do not contain the entire genome. The nucleus is the best descriptor because it is the primary repository of genetic material in the cell.

In eukaryotic cells, the structure that houses the genetic material is the nucleus. It is enclosed by a double membrane known as the nuclear envelope, with nuclear pores that regulate what enters and exits. Inside the nucleus, DNA is organized into chromosomes, and this separation from the rest of the cell allows controlled replication and transcription of genes. The endoplasmic reticulum is a membrane network involved in synthesizing proteins and lipids; the cytoplasm is the jelly-like fluid where many metabolic activities happen outside the nucleus; and mitochondria are energy producers that contain some DNA but do not contain the entire genome. The nucleus is the best descriptor because it is the primary repository of genetic material in the cell.