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Life Science Chapter 4
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Bellwork Discuss a scientific observation you made over the weekend.
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Make a Book! Work with a partner, but everyone needs their own book. Spend about 5-10 minutes and read section 1 on your own Then, get with a partner and make the title page of your book
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Chapter 1 Section 1: – Taxonomy (definition, scientists, how it is useful) – History (Aristotle, Chain of Being, Linnaeus) – Five Kingdom System – More Categories
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Chapter 2 Spend 5-10 minutes reading section 2
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Section 2 7 categories taxonomists use for classifying Pictures and explanations for each
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Bellwork What are the 7 levels of classification of organisms?
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Taxonomy http://www.youtube.com/watch?v=aiC_Z8Za7 wc
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Taxonomy The scientific classification of organisms. There are billions of organisms that live on Earth Taxonomists (scientists who study taxonomy) have identified about 1.4 million species
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History Aristotle 384-322 B.C. Ladder of life Mammals Vertebrates Invertebrates Plants Nonliving things 14 th Century Philosophers Great Chain of Being Spiritual Beings Humans Higher Animals Lower Animals Plants Nonliving things Carolus Linnaeus 1700s Binomial Nomenclature Two part Latin names First name is the species Second name distinguishes between species
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Microscope Because of the microscope, scientists have added to the Kingdom system – Microorganisms – Mushrooms
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Five Kingdom System
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Classification 1. Kingdom 2. Phylum 3. Class 4. Order 5. Family 6. Genus 7. Species
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Bellwork 10-7 Give an example of an organism from each of the five kingdoms
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Kingdom Bacteria Includes all species of bacteria Some divide this kingdom into two: – Archaebacteria – Eubacteria
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http://danmarkltd.tripod.com/taxonomy/id5. html http://danmarkltd.tripod.com/taxonomy/id5. html
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Kingdom Protista (Protoctista) Contains one-celled organisms that contain a nucleus that are not animals, plants, fungi, or bacteria
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Open book quiz over sections1-2
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Bellwork 10-8 The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
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Classification of Living Things http://www.youtube.com/watch?v=g9AQbkQ gVeU http://www.youtube.com/watch?v=g9AQbkQ gVeU
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Section 3 Bacteria, Protists, Fungi Read section 3. For each of the categories above, find the following information: – 1. A description of the organisms in this category – 2. Beneficial and detrimental effects of organisms in this category – 3. Habitat of organisms in this category – 4. Examples of organisms in this category
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Bellwork 10-9 Give an example of a bacteria, protist, and fungi. Also, I'm the part of the bird that's not in the sky. I can swim in the ocean and yet remain dry. What am I?
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Bacteria In Kingdom Prokaryotae All one-celled organisms without a nucleus The number of bacteria in your mouth right now is greater than the amount of people that have ever lived!
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Bacteria Can live in extreme environments Boiling acid, hot springs, high mountains
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Hot springs
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Ocean depths
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Benefits of Bacteria Decompose dead materials by recycling nitrogen, phosphorus, and other useful nutrients back into the environment
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Decomposition http://www.youtube.com/watch?v=c0En- _BVbGc http://www.youtube.com/watch?v=c0En- _BVbGc
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Bad bacteria Bacteria can give you cavities and make you sick
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Bad Bacteria http://natsci.edgewood.edu/wingra/wingra_b acteria.htm http://natsci.edgewood.edu/wingra/wingra_b acteria.htm
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Protoctist Organisms that have a nucleus, but is not a animal, plant, fungus, or bacteria
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Protoctist environment Live in intestines, oceans, many others
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Beneficial Protoctist Help in digestion Provide large amounts of oxygen
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Examples
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Fungi All non-green organisms that reproduce through spores and absorb their food
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Examples Mushrooms, lichens, molds, yeast
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Benefits Help support trees and other forest plants Provide antibiotics such as penicillin Provide food (mushrooms, yeast) Give off chemicals that wear down rocks into soil
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Disadvantages Some molds and mushrooms are dangerous
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Environment On trees, forest floors, rocks, many others
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