5 Questions
What is a unifying theme in the field of biology?
Evolution
Which of the following is a key characteristic of all organisms?
Regulation of internal environments
What is the primary method that biologists use to make observations and form conclusions?
The scientific method
What is a fundamental unit that all organisms are made up of?
Cells
What is the approximate age of life on Earth?
More than 3.7 billion years
Study Notes
Characteristics of Biology
- A unifying theme in the field of biology is the study of life and living organisms.
Characteristics of Organisms
- A key characteristic of all organisms is that they are composed of one or more cells.
Scientific Method in Biology
- Biologists use observation, experimentation, and evidence-based reasoning as the primary method to make observations and form conclusions.
Structure of Organisms
- All organisms are made up of cells, which are the fundamental units of life.
History of Life on Earth
- The approximate age of life on Earth is 3.5 billion years.
Test your knowledge of biology with this quiz! Explore topics such as cells, genes, heredity, and evolution. Challenge yourself with questions that cover the broad scope of this natural science and its unifying themes.
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