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Introduction to biology

Introduction to biology. Biology – The Study of Life. BIO – life; living OLOGY – the study of. A. Main Idea of Biology – living things interact with their environment . Living things do not exist in isolation. B. Why study Biology?

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Introduction to biology

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  1. Introduction to biology

  2. Biology – The Study of Life BIO – life; living OLOGY – the study of

  3. A. Main Idea of Biology – living things interact with their environment. Living things do not exist in isolation.

  4. B. Why study Biology? As humans, we need to understand our relationship to and how we impact other living organisms in our environment.

  5. C. Two biological factors: Abiotic – Nonliving Biotic – Living

  6. D. Characteristics of Living Things

  7. Characteristics of Life What characteristics must something have in order to be considered living?

  8. 1. Reproduction – all living things reproduce

  9. Asexual Reproduction: offspring are identical to parent

  10. Sexual Reproduction: offspring are different from parent

  11. Species—a group of similar looking organisms that can interbreed and produce fertile offspring.

  12. 2. Adaptation – when an organism changes & the change allows for better survival, the organism has adapted.

  13. Evolution: change over time

  14. 3. Response (Stimulus and Response) • *Stimulus – the thing that causes a change in an environment • *Response – reaction to the change/stimulus • Ex. Stimulus – It’s raining outside Response – You ???

  15. 4. Energy all living organisms use energy (ATP) Ex. Metabolism:sum of chemical energy that an organism uses Energy is the ability to do work Work is force times distance (W=fxd)

  16. 5. Homeostasis organisms strive to reach equilibrium or balance Ex. Body temperature, blood sugar, pH concentration, etc.

  17. 6.Organization all living things are organized • Show an orderly structure • Are unicellular (one-celled) or • multicellular (many-celled) • cells->tissue->organ->organ system ->Organism

  18. 7.Growth & Development

  19. Growth – an increase in the amount of living material & formation of new structures

  20. Development – bodily changes an organism undergoes. Ex. Puberty

  21. Your Way to Remember: Rare Hog stop

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