Differentiation — Science definition
Defined in 2 courses:
- Separation of materials into layers, often by density. (Earth & Space Science)
- Development of a more specialized cell state. (Life Science: Biology)
Where it is taught
- Reconstructing Early Earth — Earth’s History, Earth & Space Science, Grade 9
- Differentiation, Growth & Cell-Cycle Control — Cell Division, Reproduction & Development, Life Science: Biology, Grade 10
In use
Dense iron-rich material separated toward the center as differentiation produced a layered planet.
Reconstructing Early Earth
Differentiation changes proteins and structures, enabling functions such as contraction or secretion.
Differentiation, Growth & Cell-Cycle Control
Questions using differentiation
Problem 1
How does density help explain differentiation?
Answer and explanation
Under conditions permitting movement, denser materials can sink relative to less dense materials.
Problem 2
What does differentiation usually change?
- Patterns of expression and cell function
- The need for all membranes
- The identity of every inherited base by design
- All cells into identical cells
Answer and explanation
Patterns of expression and cell function
Specialization depends strongly on regulated expression.
Problem 3
Why does a tissue need both division and differentiation?
Answer and explanation
Division supplies cells; differentiation provides the specialized functions and organization needed for the tissue.