Evolutionary unity refers to the structures that are common in all living things. The cellular structures that are common to all organisms provide a foundational basis to understand both the origins and diversity of life.
- The cell structures that BEST reveal evolutionary unity are ribosomes and biological membranes.
- All procaryotic microorganisms and eukaryotic cells have a biological membrane called the plasma membrane.
- The plasma membrane acts as a semipermeable barrier that separates the interior of the cell from its surrounding environment.
- In eukaryotic cells, membrane-bound organelles exhibit different functions, and thereby biological membranes provide compartmentalization of function within organelles.
- Ribosomes are also common structures to all life forms (both prokaryotes and eukaryotes).
- These organelles (ribosomes) are responsible for protein synthesis by a process called 'translation'.
Evolutionary unity refers to the cellular structures that are common in all living things. Biological membranes and ribosomes cellular structures provide a foundational basis to understand both the origins and biological diversity of life.
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