Question 49

The smallest structure that can display all the properties of life is a cell.

A cell is the fundamental unit of life that can perform all necessary biological functions, including metabolism, growth, reproduction, and response to stimuli.

A) Cell

This option is correct because a cell is the basic structural and functional unit of all living organisms. It is capable of carrying out all life processes, such as energy production, replication, and interaction with its environment.

B) Nucleus

The nucleus is an organelle found within eukaryotic cells that houses genetic material. While it is essential for cell function, it does not itself exhibit all the properties of life, as it relies on the cell as a whole for metabolic activities and reproduction.

C) Organ

An organ is a complex structure made up of different types of tissues working together to perform specific functions. However, it is not the smallest unit that can display all properties of life, as organs are composed of multiple cells and cannot function independently.

D) DNA

DNA is the hereditary material in cells that carries genetic information. Although it is crucial for the transmission of traits and the functioning of living organisms, DNA alone cannot exhibit all life properties, as it requires a cellular context to function.

Conclusion

The cell is definitively the smallest structure that can display all the properties of life, as it operates independently and performs all necessary life functions. In contrast, the nucleus, organ, and DNA are integral components of life but do not possess the complete set of characteristics required to be classified as living entities on their own.