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What is a cell structure that differs in function or presence for eukaryotes that differ from bacteria because of size difference?


What is a cell structure that differs in function or presence for eukaryotes that differ from bacteria because of size difference?

Step 1

The cell is defined as a basic functional and structural unit of life. Cells of eukaryotes and prokaryotes show two similar structures: cytoplasm and the cell membrane or plasma membrane. The plasma membrane is the outer covering of the cell.

 It acts as a barrier between the cytoplasm and the external environment.


The cytoplasm is a jelly-like fluid composed of water. It is enclosed by a cell membrane from the outer side. Many organelles like ribosomes, mitochondria, organic molecules, and some enzymes are present in the cytoplasm. A common example of eukaryotes is mammals, birds while that of a prokaryote is bacteria.

Step 2

The basic difference between the cells of prokaryotes (bacteria) and eukaryotes is:


The significant difference between prokaryote and eukaryote is the nucleus. The nucleus is a round-shaped organelle, mainly found in eukaryotes. Nucleus contains all the genetic material of the cell. In prokaryotes, the nucleus and other membrane-bound organelle are completely absent. The genetic material in prokaryotes is found in the cytoplasm of the cell.


A prokaryotic cell is usually unicellular or multicellular, but the eukaryotic cells are multicellular. Bacteria mainly reproduces through asexually but in eukaryotes, sexual mode of reproduction is more common.


In eukaryotic cells, the ribosomes are more complex and bigger and are bound by a membrane. They can be present on the endoplasmic reticulum or free in the ribosomes. In prokaryotic cells, the ribosomes are scattered and are mainly present in the cytoplasm. The ribosome is composed of two subunits, smaller and the larger subunit. The two subunits of ribosomes in prokaryotes are 50-S and 30-s while in eukaryotes they are 60-S and 40-S.

Step 3

Bacteria are smaller in size than the eukaryotic cells, due to their smaller size the organelles composition differs from eukaryotic cells. In prokaryotes, cell membrane-bound organelles like lysosomes, endoplasmic reticulum, vacuoles, and Golgi apparatus are absent.

Bacteria also vary in their shape and size like rod-shaped bacteria, filamentous bacteria. Common examples of bacterial cells are&nb...

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