why do the shape and size of cells vary within the body??
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Answer: They vary because of the structure-function relationship.
Explanation: The variety of cell shapes and sizes seen in prokaryotes and eukaryotes reflects the functions that each cell has, confirming the structure-function relationship seen throughout biology. Each cell type has evolved a shape that is best related to its function.
Here are some examples:
- the neuron in has long, thin extensions (axons and dendrites) that reach out to other nerve cells. The extensions help the neuron pass chemical and electrical messages quickly through the body.
- The shape of the red blood cells (erythrocytes) enable these cells to easily move through capillaries.
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