Biology: Unifying Themes and Concepts

The unifying themes in biology include the cellular basis of life, heredity and gene transmission, evolution, energy processing, and the ability of organisms to regulate their internal environments.

Biologists can study life at multiple levels of organization, including molecular biology of a cell, anatomy and physiology of plants and animals, and the evolution of populations.

Biologists use the scientific method to make observations, pose questions, generate hypotheses, perform experiments, and form conclusions about the world around them.

<p>Life on Earth emerged more than 3.7 billion years ago.</p> Signup and view all the answers

<p>Biologists have sought to study and classify various forms of life, including prokaryotic organisms such as archaea and bacteria, as well as eukaryotic organisms such as protists, fungi, plants, and animals.</p> Signup and view all the answers