Biologists' Favorite Topic: Cells and Tissues

What is the smallest unit of life in all living organisms?

A. Organelle

B. Atom

C. Cell

D. Tissue

Answer:

The correct answer is Cell.

Cells are the smallest structural and functional unit of living organisms. They are often called the building blocks of life because they perform various essential functions, such as growth, metabolism, and reproduction.

Cells can be classified into two main categories: prokaryotic cells, which lack a nucleus, and eukaryotic cells, which have a nucleus enclosed within a membrane. Each type of cell has specific organelles and structures that contribute to its unique functions.

Biologists study cells to understand the basic processes of life and how organisms function at the cellular level. The field of cell biology continues to evolve, uncovering new discoveries and insights into the intricate world of cells.