1 / 45

*Essential Question: Identify the characteristics of life.

Aim#3: What are the characteristics of life? Textbook 1.3-Studying Life (p.17-23). 9/11/13. *Essential Question: Identify the characteristics of life. HW#3 _______Read p.22-23-Fields of Biology:  Read  about a few fields in biology and

sean-sellers
Download Presentation

*Essential Question: Identify the characteristics of life.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Aim#3: What are the characteristics of life? Textbook 1.3-Studying Life (p.17-23) 9/11/13 *Essential Question: Identify the characteristics of life. HW#3_______Read p.22-23-Fields of Biology: Read  about a few fields in biology and write a short summary of the one that interested you the most.   Explain why this field appealed to you. HW#4 ________ Research 7 facts about pill bugs (isopods, pill bugs, sow bugs, rollie pollies) Over the weekend- Collect pill bugs.  Try to collect 10 of them. Place them in a small margarine or chinese food container with some tiny holes, place a moist towel in the container and a slice of potato and a tiny bit of soil. Label the container with your name and the period that your class meets for biology. Bring these in on Monday (if you do not have pill bugs on Monday, you will not be able to complete the pill bug lab). 

  2. Pill Bug LabIsopods • What you will need to do: • Clean out a margarine/Chinese food container • Poke a few holes into the cover of container • Crumple and moisten a paper towel and place in the container • Slice a piece of potato or apple and put into container • Carefully find pill bugs, place into container and cover • Wash your hands and bring in to class on Monday to start Lab!

  3. Isopods: Breath with gills Restricted to areas with high humidity (moist) omnivores/scavengers harmless live 2 to 3 years seven pairs of legs like rotting vegetation 4000 species molt external skeleton fertilized eggs hatch from ventral pouch remove toxic metals from the soil! Three Main Body Parts: Head Thorax Abdomen Color: dark gray to white

  4. Pill Bugs Sow Bugs

  5. *Activity: Livings vs. Nonliving

  6. What is life? • We now know that Life CAN NOT be defined !!! • However… we CAN explain LIFE by describing characteristics of living things

  7. 1. What do all of these things have in common?How are they different?

  8. 2)What is BIOLOGY? The Study of life!!

  9. What is • Biology? Origins and history of life Structures of living things Interactions of living things Function of living things

  10. 3. What do biologists do? • a. Study the diversity of life • *What type of life forms do we study? • b. Research diseases • *What diseases • are in the news? • c. Develop technologies • *How do we improve technology? • Improve agriculture • *How can we improve agriculture? • e. Preserve the environment *How do we preserve nature?

  11. 4. Characteristics of Life: • LIVING THINGS… • a. Are made up of one or more cells • Unicellular vs. Multicellular • Display organization • For example: • - Organelles in a Paramecium • - Specialized cells in multicellular • organisms (ex. blood cells)

  12. 4. Characteristics of Life: • Grow and Develop • Growth- • Development- • Reproduce • Neutered dogs and cats? • Species-

  13. 4. Characteristics of Life: • Respond to stimuli • Stimulus- • Response- • Examples? • Require energy • Metabolism: • Autotroph vs. Hetertroph:

  14. 4. Characteristics of Life: • Maintain Homeostasis • Homeostasis- • For example: Changes in altitude • Have adaptations that can evolve over time (evolution) • Adaptation: • Why are adaptations important?

  15. LIFE PROCESSES/ACTIVITIES • M metabolism • R regulation • S synthesis • T transport • R respiration • A assimilation • N nutrition • G growth • E excretion • R reproduction

  16. LIFE PROCESSES/ACTIVITIES • M metabolism • R • S • T • R • A • N • G • E • R

  17. METABOLISM - the total of ALL the life activities required to sustain life. - it isALL THE LIFE PROCESSES TOGETHER. **includes activities that build substances as well as those that break down substances.

  18. LIFE PROCESSES/ACTIVITIES • M • R regulation • S • T • R • A • N • G • E • R

  19. REGULATION - the CONTROL and COORDINATION of various activities of an organism. • it involves responding to stimuli. KEY WORDS: control coordinate regulate response stimulus detect

  20. LIFE PROCESSES/ACTIVITIES • M • R • S synthesis • T • R • A • N • G • E • R

  21. SYNTHESIS • chemical activities by which an organism builds large, more complex molecules from smaller, less complex molecules. Key Words: Form Build Make Create Synthesize Produce

  22. LIFE PROCESSES/ACTIVITIES • M • R • S • T transport • R • A • N • G • E • R

  23. TRANSPORT - the ABSORPTION of materials into the organism ANDCIRCULATION of materials throughout the organism. Key words: Circulate Absorb Distribute Movement Take in

  24. LIFE PROCESSES/ACTIVITIES • M • R • S • T • R respiration • A • N • G • E • R

  25. RESPIRATION • Breaking down food to generate ENERGY KEY WORDS: **MAKING ENERGY**

  26. LIFE PROCESSES/ACTIVITIES • M • R • S • T • R • A assimilation • N • G • E • R

  27. ASSIMILATION - When an organism incorporates new material into the body or cell

  28. LIFE PROCESSES/ACTIVITIES • M • R • S • T • R • A • N nutrition • G • E • R

  29. Nutrition • activity by which an organism obtains materials and energy from its environment and processes them for its own use. Includes 3 processes:

  30. taking in food. breaking down food. A. INGESTION= B. DIGESTION= C. EGESTION= removal of undigested or undigestible food.

  31. There are 2 TYPES OF NUTRITION: • AUTOTROPHIC NUTRITION = • organism can MAKE ORGANIC COMPOUNDS FROM INORGANIC RAW MATERIALS - or - - organism can MAKE ITS OWN FOOD ex: plants, some bacteria

  32. b) HETEROTROPHIC NUTRITION = - organism must OBTAIN FOOD from environment (can’t make its own) or - Organism MUST OBTAIN PRE-FORMED ORGANIC COMPOUNDS (FOOD) FROM THEIR ENVIRONMENT ex: animals, fungi, bacteria

  33. LIFE PROCESSES/ACTIVITIES • M • R • S • T • R • A • N • G growth • E • R

  34. GROWTH/DEVELOPMENT - increase cell size and/or the number of cells in an organism.

  35. LIFE PROCESSES/ACTIVITIES • M • R • S • T • R • A • N • G • E excretion • R

  36. EXCRETION - removal of the waste products PRODUCED BY THE ORGANISM! (metabolic wastes) **Not the same as egestion!!!

  37. LIFE PROCESSES/ACTIVITIES • M • R • S • T • R • A • N • G • E • R reproduction

  38. REPRODUCTION - production of new individuals. **this life process is not needed for survival of the individual, but it is needed for the survival of a species.

  39. LIFE PROCESSES/ACTIVITIES • M metabolism • R regulation • S synthesis • T transport • R respiration • A assimilation • N nutrition • G growth • E excretion • R reproduction

  40. What is HOMEOSTASIS? - theMAINTENANCE OF A STABLE INTERNAL ENVIRONMENT…. EVEN WHEN the external environment changes! - Homeostasis depends onall the life functions working together in coordination to keep the organism stable.

More Related