Question

1. how do the following illustrate the phrase “form fits function”? how does their structure tell us about their function?)

Explanation:

• Red Blood Cells:
• Type of Cell: The first cell type is red blood cells.
• How does its form fit its function: Red blood cells are small, biconcave discs. This shape provides a large surface - area - to - volume ratio, which is ideal for gas exchange (e.g., oxygen uptake and carbon dioxide release). The lack of a nucleus (in mature human red blood cells) also allows more space for hemoglobin, the protein that binds to oxygen.
• Neurons:
• Type of Cell: The second cell type is a neuron (nerve cell).
• How does its form fit its function: Neurons have a cell body with dendrites (short, branched extensions) that receive signals from other neurons. The long axon transmits electrical impulses (action potentials) over long distances. The axon terminals release neurotransmitters to communicate with other cells (like other neurons or muscle cells). The overall structure (dendrites for input, axon for long - distance signal transmission, and axon terminals for output) is specialized for the function of transmitting and processing information in the nervous system.

Answer:

• Red Blood Cells: Small, biconcave discs with no nucleus (in humans). Large surface - area - to - volume ratio for gas exchange; more space for hemoglobin.
• Neurons: Cell body with dendrites (input), long axon (signal transmission), and axon terminals (output). Specialized for information transmission and processing in the nervous system.