Life Science Chapter 4. Bellwork Discuss a scientific observation you made over the weekend.

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Presentation transcript:

Life Science Chapter 4

Bellwork Discuss a scientific observation you made over the weekend.

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

Chapter 1 Section 1: – Taxonomy (definition, scientists, how it is useful) – History (Aristotle, Chain of Being, Linnaeus) – Five Kingdom System – More Categories

Chapter 2 Spend 5-10 minutes reading section 2

Section 2 7 categories taxonomists use for classifying Pictures and explanations for each

Bellwork What are the 7 levels of classification of organisms?

Taxonomy wc

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

History Aristotle 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

Microscope Because of the microscope, scientists have added to the Kingdom system – Microorganisms – Mushrooms

Five Kingdom System

Classification 1. Kingdom 2. Phylum 3. Class 4. Order 5. Family 6. Genus 7. Species

Bellwork 10-7 Give an example of an organism from each of the five kingdoms

Kingdom Bacteria Includes all species of bacteria Some divide this kingdom into two: – Archaebacteria – Eubacteria

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Kingdom Protista (Protoctista) Contains one-celled organisms that contain a nucleus that are not animals, plants, fungi, or bacteria

Open book quiz over sections1-2

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?

Classification of Living Things gVeU gVeU

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

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?

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!

Bacteria Can live in extreme environments Boiling acid, hot springs, high mountains

Hot springs

Ocean depths

Benefits of Bacteria Decompose dead materials by recycling nitrogen, phosphorus, and other useful nutrients back into the environment

Decomposition _BVbGc _BVbGc

Bad bacteria Bacteria can give you cavities and make you sick

Bad Bacteria acteria.htm acteria.htm

Protoctist Organisms that have a nucleus, but is not a animal, plant, fungus, or bacteria

Protoctist environment Live in intestines, oceans, many others

Beneficial Protoctist Help in digestion Provide large amounts of oxygen

Examples

Fungi All non-green organisms that reproduce through spores and absorb their food

Examples Mushrooms, lichens, molds, yeast

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

Disadvantages Some molds and mushrooms are dangerous

Environment On trees, forest floors, rocks, many others