Question

unit 1 cumulative test (characteristics of life, biomolecules, cell structure and transport) 2025
11 of 40

during development, human cells differentiate into specialized cells such as neurons, muscle cells, and blood cells. despite their differences, these cells work together within tissues and organs to maintain life functions. how does this scenario illustrate both the concept of the cell as the basic unit of life and the importance of cellular organization?

○ specialized cells function independently, proving that tissues are more fundamental than cells
○ differentiated cells lose their ability to maintain homeostasis, showing that organization is inefficient
○ all specialized cells originate from a single cell and organize into systems that support life
○ cellular organization prevents cells from performing individual life functions

Explanation:

1. Analyze Option 1: Specialized cells working together (not independently) support life, so this is incorrect.
2. Analyze Option 2: Differentiated cells help maintain homeostasis, so saying organization is inefficient is wrong.
3. Analyze Option 3: All specialized cells come from a single cell (zygote) and organize into systems (like tissues, organs) that support life. This matches the concept of cell as the basic unit and cellular organization importance.
4. Analyze Option 4: Cellular organization allows cells to perform functions as part of a system, not prevent, so this is incorrect.

Answer:

C. All specialized cells originate from a single cell and organize into systems that support life.