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Everyone is a Biologist !

Everyone is a Biologist !. Chapter 1 What is Life?. Chapter 1 What is Life?. Chapter 1 What is Life?. Chapter 1 What is Life?. Today: Three Questions. How diverse is life?. What are the Characteristics of Life?.

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Everyone is a Biologist !

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  1. Everyone is a Biologist !

  2. Chapter 1 What is Life?

  3. Chapter 1 What is Life?

  4. Chapter 1 What is Life?

  5. Chapter 1 What is Life? Today: Three Questions How diverse is life? What are the Characteristics of Life? How do we study the natural world?

  6. Chapter 1 What is Life? All living things exhibit five characteristics in combination. What are the Characteristics of Life?

  7. Chapter 1 What is Life? What are the Characteristics of Life?

  8. Chapter 1 What is Life? MULTICELLULAR ORGANISM ORGAN SYSTEM ORGAN What are the Characteristics of Life? TISSUE CELL ORGANELLE MOLECULE ATOM

  9. Chapter 1 What is Life? What are the Characteristics of Life?

  10. Chapter 1 What is Life? Each level of biological organization exhibits emergent properties. What are the Characteristics of Life? Ex. Capillaries transport blood (property not exhibited by individual endothelial cells).

  11. Chapter 1 What is Life? Energy Use & Metabolism Metabolism - biochemical reactions that acquire & use energy. Why do organisms need energy? How do organisms obtain energy? What are the Characteristics of Life?

  12. Chapter 1 What is Life? What are the Characteristics of Life?

  13. Chapter 1 What is Life? Maintenance of Homeostasis Homeostasis- the ability of an organism to maintain its internal environment despite conditions in the external environment. Human body temperature is……… • if body temperature rises, you sweat. • if body temperature lowers, you shiver. What are the Characteristics of Life?

  14. Chapter 1 What is Life? Reproduction, Growth & Development Asexual reproduction - involves a single parent; progeny are genetically identical to the parent. Sexual reproduction - involves 2 parents; progeny are genetically diverse. Is it essential for an individual to reproduce? What are the Characteristics of Life?

  15. Chapter 1 What is Life? Irritability & Adaptation Irritability- immediate response to a stimulus. What are the Characteristics of Life?

  16. Chapter 1 What is Life? Irritability & Adaptation Adaptation- an inherited behavior or characteristic that enables an organism to survive & reproduce. What are the Characteristics of Life? Over time, adaptations are modified bynatural selection.

  17. Chapter 1 What is Life? Life is always changing….. On the level of DNA…… Change = Evolution What are the Characteristics of Life? Evolution is the backbone of biology.

  18. Chapter 1 What is Life? A Short Quiz: 1. What are the characteristics of life? 2. What is homeostasis? What is an example of homeostasis? 3. Is a computer living? Why or why not? Is a virus living? What are the Characteristics of Life? 4. Why is energy required by living things?

  19. Chapter 1 What is Life? Biodiversity refers to the many different types of organisms on earth. Taxonomy is the biological science that classifies life according to evolutionary relationships. Life is Diverse The Domain is the largest group of organisms.

  20. Chapter 1 What is Life? Life is Diverse

  21. Chapter 1 What is Life? Kingdom Phylum Class Order Family Genus Species Life is Diverse Kings Play Chess On Funny Green Squares

  22. Chapter 1 What is Life? Human classification scheme: Domain Eukarya Kingdom Animalia Phylum Chordata Class Mammalia Order Primates Family Hominidae Genus & species Homo sapiens Life is Diverse

  23. Chapter 1 What is Life? A Short Quiz: 1. What is the order of classification? 2. Which has more critters: an order or a genus? 3. What is taxonomy? Life is Diverse 4. The scientific name includes the _____ and _____ name.

  24. Chapter 1 What is Life? What is the Scientific Method? Methodical exploration What makes science unique! How do we study the Natural World?

  25. Chapter 1 What is Life? Observations Question Hypothesis Prediction How do we study the Natural World? Now What???

  26. Observations Question Hypothesis Prediction Chapter 1 What is Life? How do we study the Natural World? Experiment

  27. Chapter 1 What is Life? How do we study the Natural World?

  28. Chapter 1 What is Life? After you perform your experiment, you need to analyze the generated data. Does the data support or not support your hypothesis? How do we study the Natural World? If your data does not support the hypothesis then…… If your data does support your hypothesis……..

  29. Chapter 1 What is Life? What is difference between hypothesis, theory & law? Hypothesis - “an educated guess”; a tentative explanation of phenomena. Theory - a widely accepted explanation of natural phenomena; has stood up to thorough & continual testing. Law - a statement of what always occurs under certain conditions. How do we study the Natural World?

  30. Chapter 1 What is Life? How is a control group different from an experimental group? What is a double-blind study? How do we study the Natural World?

  31. Chapter 1 What is Life? How do we study the Natural World?

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