Electrolysis Practice Exam

Cells are fundamental units of what?

1. All living matter

2. Non-living matter

3. Lifeless substances

4. Artificial structures

The correct answer is: All living matter

Cells are indeed the fundamental units of all living matter. They serve as the basic building blocks of life, being the smallest units capable of performing all the essential processes that define life, such as metabolism, growth, and reproduction. Every living organism, from the simplest bacteria to complex multicellular organisms like plants and animals, is made up of cells, which work together to carry out various functions necessary for survival. The other options refer to entities that do not exhibit the characteristics of life. Non-living matter, lifeless substances, and artificial structures do not possess the cellular organization or biological functions that are characteristic of living organisms. Therefore, the focus on cells as the foundational unit of all living matter highlights their critical role in the study of biology and life sciences.