Themes-on-Life-A-Multifaceted-Perspective.pptx

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1. Themes on Life: A Multifaceted Perspective Life is a fascinating and intricate phenomenon, characterized by a diverse array of interconnected properties. From the microscopic world of cells to the vast ecosystems of our planet, life exhibits remarkable organization and complexity. by Airo Gumban

2. Emergent Properties in Life Emergent properties arise from interactions within a system. Complexity increases as levels of organization rise. New properties emerge, not present at lower levels. 1 Ecosystem 2 Community 3 Population 4 Organism 5 Organ System 6 Tissue 7 Cell 8 Organelle 9 Molecule

3. Life's Defining Characteristics: Order and Reproduction Living organisms exhibit a high degree of order and complexity. Reproduction is essential for the continuity of life. The principle of biogenesis states that life arises only from pre-existing life. Intricate Organization Cells as the fundamental units of life. Reproduction Genetic information passed on through generations. Biogenesis Life originates from pre-existing life.

4. Growth, Development, and Energy Utilization 1 Genetic Blueprint DNA instructions guide growth. 2 Development Species-specific patterns emerge. 3 Energy Acquisition Fuel for life's processes.

5. Life's Dynamic Nature: Response and Homeostasis Organisms respond to environmental stimuli. Adaptations to changing conditions: survival strategy. Internal balance: homeostasis for stable function. External Stimuli Light, temperature, and chemical cues. Internal Response Physiological and behavioral adaptations. Homeostasis Maintaining stable internal environment.

6. The Core Theme: Evolution Evolution is the driving force of biological change. Adaptation to the environment leads to diversity. Life continuously evolves and adapts. 1 Early Earth Formation of the planet, 4.5 billion years ago. 2 First Life Emergence of single-celled organisms, 3.5 billion years ago. 3 Photosynthesis Oxygen production, 2.5 billion years ago. 4 Multicellular Life Evolution of complex organisms, 1.5 billion years ago. 5 Cambrian Explosion Rapid diversification of life, 540 million years ago. 6 Age of Dinosaurs Dominance of reptiles, 250-65 million years ago. 7 Age of Mammals Rise of mammals, 65 million years ago to present.

7. Life's Processes Involve the Expression and Transmission of Genetic Information Genetic information is encoded within DNA. Expression of genes leads to protein synthesis. Genetic information is passed from parents to offspring. 1 DNA Blueprint for life, containing genetic instructions. 2 Gene Expression DNA instructions are transcribed into RNA. 3 Protein Synthesis RNA instructions are translated into proteins. 4 Replication DNA copies itself before cell division. 5 Transmission DNA is passed on to offspring through reproduction.

8. Life Requires the Transfer and Transformation of Energy and Matter Energy flows through ecosystems from sunlight to living organisms. Matter cycles through the biosphere, essential elements move. Metabolic processes transform energy and matter. 1 Producers Photosynthesis captures sunlight. 2 Consumers Obtain energy by consuming others. 3 Decomposers Break down organic matter.

9. Interactions Are Key in Biological Systems Molecular Level Interacting molecules form complex structures. Cellular Level Organelles cooperate within cells. Organismal Level Organ systems work together. Ecosystem Level Species interact within environments.