Chapter 11 Foundations of Biology

Apuntes

Chapter 1: Foundations of Biology Common Themes in Biology - Biology has unifying themes that connect all areas of study. Some of the most important include: 1. Organization – Life is structured in levels (molecules → organelles → cells → tissues → organs → organisms → populations → ecosystems → biosphere). Each level builds on the one before it. 2. Information – Genetic information stored in DNA directs development, functioning, and reproduction. 3. Energy and Matter – Life requires energy transformations (e.g., sunlight → chemical energy → cellular work). Matter is cycled through ecosystems. 4. Interactions – Living things interact with their environment and with each other (e.g., predator-prey, symbiosis, ecosystems balance). 5. Evolution – Populations change over time, explaining both the unity and diversity of life. Evolution is the core theme of biology. Emergent Properties - Definition: Properties that arise when components interact at higher levels of organization. - Example in Living Things: ● Molecules alone cannot show life, but when arranged into organelles and cells, the property of "life" emerges. ● A single neuron cannot think, but billions interacting in the brain c...