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Which of the above is living? Talk with your neighbor…

Dive into the study of living organisms and their environmental interactions. Explore the nine key characteristics of life and how organisms adapt and evolve. Discover the unity and diversity in biology.

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Which of the above is living? Talk with your neighbor…

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  1. A. B. Which of the above is living? Talk with your neighbor… HOW do you know which is living? What made you choose one over the other? A: A radiolarian is a tiny living thing that is covered with a glasslike shell and lives in the ocean. B. A snowflake is a crystal made of frozen water.

  2. THE CHARACTERISTICS OF LIFE

  3. Biology • The organized study of living things and their interactions with the environment around them • In other words, The study of life!

  4. Themes in Biology • Organization • Cells • Correlation between structure & function • Interaction between organisms & their environment • Unity in diversity • Evolution (change over time) • Scientific Processes

  5. Living things don’t exist in isolation… • All living things depend on other living (and non-living) things in a variety of ways • Examples: • Plants and Humans • Humans and water.

  6. Time to think…. • On your own, think of some characteristics you would look for to determine if something is alive or not. • Now, share your ideas with one neighbor. • Finally, let’s share as a whole group….

  7. WHAT IS LIFE? • Living things are called ORGANISMS • All organisms must have ALL of the following NINE Characteristics of Life… Remember: FRED H. GARC

  8. “FRED” • F – Use and need Food • Organisms need nourishment as they grow and change • Organisms go through METABOLISM: • The combination of chemical reactions through which organisms build up or breakdown materials as it carries out its life processes • R – Must be capable of Reproduction • Asexual Reproduction • Offspring result from and resemble ONE parent • Sexual Reproduction • Offspring result from and resemble TWO parents • E – Must be able to transfer Energy • Different organisms obtain energy in different ways (plants vs. animals vs. bacteria) • D – Develop and Grow • Organisms undergo a series of stages to reach maturity • Infant  Toddler  Young Adult  Adult

  9. “H” • H – Homeostasis • Is a Steady internal balance • H+ • Blood Pressure • Respiration rate • Body Temperature

  10. “GARC” • G – Genetic code • All organisms are based on virtually the same genetic code • Inheritance of traits is carried and directed by DNA • A – Adapt to change and EVOLVE • ADAPTATION • Any structure, behavior, or internal process that enables an organism to respond to stimuli and better survive in an environment • Structural – wings, arms, ect. • Physiological – internal body processes • Behavioral – innate, learned • R – Respond to stimuli • Variables (both living & nonliving) cause organisms to make internal as well as external adjustments • STIMULUS • A condition in the environment that requires an organism to change or adjust • RESPONSE • A reaction to a stimulus • C – Made of at least one (1) Cell

  11. Made up of Cells • Cell • A collection of matter enclosed by a barrier that separates the cell from its surroundings • Organisms can be unicellular (single-celled) or multi-cellular (many-celled)

  12. 1.) Atom 2.) Molecule 3.) Macromolecule 4.) Organelle 5.) Cell Levels of Organization From smallest to largest: • 6.) Tissue • 7.) Organ • 8.) Organ System • 9.) Organism

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