Identify the component found only in a eukaryotic cell.

The correct answer is Option (3) - Nuclear membrane

The component found only in a eukaryotic cell is: Nuclear membrane

The nuclear membrane, also known as the nuclear envelope, is a double membrane structure that surrounds the nucleus in eukaryotic cells. It separates the contents of the nucleus, including the DNA, from the cytoplasm. The nuclear membrane contains pores that control the passage of molecules between the nucleus and the cytoplasm, regulating the flow of genetic information and other essential molecules.

Here's an explanation of the other components listed:

• Ribosomes: Ribosomes are cellular structures responsible for protein synthesis. While ribosomes are found in both eukaryotic and prokaryotic cells, they are not exclusive to eukaryotic cells.
• Plasma membrane: The plasma membrane, also known as the cell membrane, is a phospholipid bilayer that surrounds the cell, regulating the passage of molecules in and out of the cell. It is found in both eukaryotic and prokaryotic cells.
• Cytoplasm: Cytoplasm is the semi-fluid substance that fills the interior of cells, surrounding organelles. It is involved in various cellular processes and is found in both eukaryotic and prokaryotic cells.