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Questions and Answers
Which unifying theme in biology explains the unity and diversity of life?
Which unifying theme in biology explains the unity and diversity of life?
- Energy processing
- Evolution (correct)
- Regulation of internal environments
- Cell structure
What is a key characteristic of organisms that is essential for transmitting hereditary information?
What is a key characteristic of organisms that is essential for transmitting hereditary information?
- Energy processing
- Regulation of internal environments
- Cellular structure
- Genes encoded in cells (correct)
How do biologists study life at multiple levels of organization?
How do biologists study life at multiple levels of organization?
- By analyzing data from social sciences
- By observing patterns in the universe
- By using the scientific method to perform experiments (correct)
- By studying the geology of the Earth
When did life on Earth emerge according to the text?
When did life on Earth emerge according to the text?
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What is the primary focus of biology?
What is the primary focus of biology?
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Study Notes
- Biology is the scientific study of life, encompassing a broad scope with unifying themes such as cellular structure and function, heredity through genes, and evolution.
- Life is composed of organisms, which are made up of cells that contain hereditary information encoded in genes, enabling continuity through generations.
- Evolution is another key theme, explaining the unity and diversity of life through natural selection acting on genetic variation.
- Energy processing is crucial for life, allowing organisms to move, grow, and reproduce.
- Biologists investigate life at various levels, from molecular biology to anatomy and physiology, and population evolution, utilizing the scientific method.
- Life on Earth, which emerged over 3.7 billion years ago, exhibits immense diversity, from prokaryotic organisms like archaea and bacteria to eukaryotic organisms including protists, fungi, plants, and animals.
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