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Chapter 1 sections 1-3 The Scientific Study of Life

by: Hailey Chow

Chapter 1 sections 1-3 The Scientific Study of Life Biology 106

Marketplace > Southeastern Louisiana University > Biology > Biology 106 > Chapter 1 sections 1 3 The Scientific Study of Life
Hailey Chow
GPA 3.2
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About this Document

sections: Characteristics of life levels of organization taxonomy
Jerrie Hanible
Class Notes




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This 3 page Class Notes was uploaded by Hailey Chow on Wednesday January 20, 2016. The Class Notes belongs to Biology 106 at Southeastern Louisiana University taught by Jerrie Hanible in Spring 2016. Since its upload, it has received 33 views. For similar materials see Biology in Biology at Southeastern Louisiana University.

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Date Created: 01/20/16
Biology 106 Chapter 1 notes 1/20/15 The Scientific Study of Life   Characteristics of Life   Acquire and use energy  All living things must have a way to gain or use energy  Example: humans use calories to have energy to do things  Producers (autotrophs)  Energy directly from environment   Make their own food by acquiring energy and raw materials from (non­living)  environment   Consumers (heterotrophs)  Must eat other living things   Acquire energy by eating other organisms   Decomposers: Heterotrophs that obtain energy from dead or decaying matter. Not physically eating other things   Example: bread, mold  Reproduction  Passing on genetic information   2 different types: Asexual and sexual  Asexual Reproduction:  One parent donating genetics   Offspring is identical copy of parent     Sexual Reproduction  2 separate parents donating genetics to offspring  Offspring has combination of new genetic information  Growth and development      Growth   Increase in cell size or amount     Development   Changes that occurs throughout and individual’s life  Respond to stimuli  Living things will sense changes in environment and respond accordingly   Basic form of movement   Examples: walking palm tree (moves towards sunlight)     Homeostasis   Maintain constant internal environment   Evolve  Change in genetic made up of a group/population over a period of time  Important processes needed:      Mutation   Change in the DNA   Foundation of Evolution      Adaptations  Inherited characteristics or behaviors that allows an organism to survive  and reproduce in the environment       Natural Selection  “Survival of the Fittest”  Difference in the survival and reproduction based on the environment   Giraffe example  Organization  Arrangement of emergent properties (put things together and get  something new)  Levels of Organization  1 .     Atoms/Molecules a. Building blocks of all substances  b. Levels shared by both all living and non­living  2 .     Cell  a. The smallest unit of life b. Able to survive and reproduce on its own  3 .     Tissue  4 .     Organ  5 .     Organ system  a. Group of organs working together chemically, physically, or both  6 .     Organism  a. Individual living thing, can be made up of one or more cells  7 .     Population   8 .     Community  9 .     Ecosystem  10 .   Biosphere   Taxonomy (Naming and grouping organisms)  Domain:   Broadest category of classification (general)  Living things grouped based on cell type     Bacteria Domain  Prokaryotic cells (old and simple in structure)  Found everywhere  Unicellular     Archaea Domain  Prokaryotic cells found in extreme environments   Unicellular     Eukarya Domain  Eukaryotic cells (new and complex)  Found everywhere   Unicellular and multicellular  Divided into 4 kingdoms  Four kingdoms  Division of domain  Group living things based on ability to move and acquisition of energy    Protist   Mobile   Producers and consumers  Examples: algae, seaweed, pond scum    Fungi  Multi­cellular, non­mobile, and consumers (decomposers)  Examples: yeast, mold, mushrooms    Plants   Non­mobile and producers  Only respond to stimuli    Animals   Mobile and consumers


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