How is bacterial cell different from an onion peel cell ?
Since bacteria are simple animals,
http://www.diffen.com/difference/Animal_Cell_vs_Plant_Cell
To understand the differences between a bacterial cell and an onion peel cell, we need to examine their structures and features.
Bacterial Cell:
1. Structure: A bacterial cell is a single-celled organism belonging to the domain Bacteria. It is typically much smaller than a eukaryotic cell.
2. Cell Wall: Most bacterial cells have a cell wall made up of peptidoglycan, a unique component absent in eukaryotic cells.
3. Nucleus: Bacterial cells lack a nucleus or any membrane-bound organelles. Their DNA is present in the form of a circular chromosome that floats freely in the cytoplasm.
4. Membrane-Bound Organelles: Bacterial cells lack membrane-bound organelles such as mitochondria, endoplasmic reticulum, or Golgi apparatus.
5. Reproduction: Bacterial cells reproduce through binary fission, where they divide into two identical daughter cells.
Onion Peel Cell:
1. Structure: An onion peel cell is a plant cell. Plant cells are eukaryotic, meaning they have a true nucleus and membrane-bound organelles.
2. Cell Wall: Like bacterial cells, onion peel cells also have a cell wall. However, the composition of the cell wall is different. Plant cell walls contain cellulose, which provides rigidity and support.
3. Nucleus: Onion peel cells have a distinct nucleus that contains the genetic material (DNA) in the form of linear chromosomes.
4. Membrane-Bound Organelles: Plant cells have various membrane-bound organelles, including mitochondria, Golgi apparatus, endoplasmic reticulum, and chloroplasts (where photosynthesis takes place).
5. Reproduction: Plant cells can reproduce both sexually and asexually, with sexual reproduction involving the fusion of male and female gametes.
To summarize, bacterial cells are prokaryotic single-celled organisms with a simple structure, while onion peel cells are eukaryotic plant cells with a complex structure and various membrane-bound organelles.