Which cell structures are seen in prokaryotic and eukaryotic cells?
nucleus
cell membrane
mitochondria
DNA
ribosomes
cytoplasm
The cell membrane, DNA, ribosomes, and cytoplasm are seen in both prokaryotic and eukaryotic cells. Mitochondria, on the other hand, are only found in eukaryotic cells. The nucleus is a distinct feature of eukaryotic cells and is not present in prokaryotic cells.
Both prokaryotic and eukaryotic cells have the following structures:
1. Cell membrane: This is the outer layer of the cell that encloses the cytoplasm and separates it from the external environment. It controls the movement of molecules in and out of the cell.
2. DNA: Both types of cells contain genetic material, which is responsible for storing and transmitting the instructions for the cell's functions and characteristics.
3. Ribosomes: These are the cellular structures responsible for protein synthesis. They can be found throughout the cell in both prokaryotic and eukaryotic cells.
4. Cytoplasm: This is the gel-like substance that fills the interior of the cell, surrounding the organelles. It contains various molecules and structures needed for cellular processes.
It is worth noting that while prokaryotic cells lack a nucleus and membrane-bound organelles, they still have a nucleoid region where the genetic material is located and perform similar functions through different structures. Eukaryotic cells, on the other hand, contain a defined nucleus and various membrane-bound organelles like mitochondria.