In the world of biology, organisms are classified into different based on shared characteristics. The primary of these organisms is known as the domain, which includes Bacteria, Archaea, and Eukarya. Each domain contains several kingdoms, with Eukarya further divided into such as animals, plants, fungi, and protists. Understanding these classifications helps scientists communicate about the diversity of life and how different species are related.
In addition to classification, the concept of plays a critical role in biology. Evolution explains how species change over time through processes like natural and genetic drift. Fossil records provide evidence for this change, showcasing how species adapt to their environments or become extinct over time. The study of these changes deepens our understanding of how life on Earth has evolved, revealing the intricate connections among all living things.
Another essential aspect of biology is the study of cellular structures, which are often referred to as the of life. Cells can be prokaryotic or eukaryotic, the former lacking a distinct while the latter has membrane-bound organelles. This cellular complexity allows eukaryotic organisms to perform various functions necessary for survival, including energy production and waste management. Observing these cellular activities underscores the foundational role cells play in all living organisms.
