study of biology 1. what is biology? biology living things are called organisms include 2
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Study of Biology
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What is Biology?Biology
Living things are called
Organisms include
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All Living Things Share Common Characteristics
1. Basic Unit is the 2. They 3. All Based On Universal
Genetic Code4.
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Common Characteristics5. Obtain & Use Materials &
5. To Their Environment
6. Maintain A 7. AS A GROUP, Living
Things , That Is They Change Over Time
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All Organisms are made of Cells
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Facts About Cells Cells are the smallest living unit of an
organism Organisms are Grouped by their
Number of Cells Unicellular Organisms
- Living Organism Made Up Of One Cell Multicellular Organisms
- Living Organism Made Up Of Many,
Specialized Cells
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Organisms Reproduce to Pass on their Genetic Traits
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Two Types of Reproduction
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Involves 2 parentsEgg fertilized by sperm to make a ZYGOTEOffspring DIFFERENT from parents
Two Types of Reproduction
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Involves a single organism or cellCell dividesOffspring IDENTICAL to parent
Cells Have a Genetic Code
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Genetic CodeDNA ( ) carries the genetic code for all organisms
contain DNA
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Organisms Grow & Develop
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Growth & Development
Organisms by producing MORE CELLS & by cell ENLARGEMENTOrganisms as they mature into an adult organism
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Cells Require Food & Energy
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Food Requirements
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-can make their own food
Example: plants
Food Requirements can NOT make
their own foodThey must consume other
organisms eat plants eat meat eat plants &
animals
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Organisms Respond to Stimuli
Organisms to (Temperature, Water, Food Supplies, etc.)
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Homeostasis Keeping The Internal Environment
(Homeostasis) Of The Cell or Organism Within The Ranges Required For Life
Stable internal conditions of
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Living Things Evolve (Not Individuals) Change Over Time In Order To Survive Within Changing Environments.Fossil records show changes in groups of organisms
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Life is Organized on Several Levels
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Levels Atoms Molecules Organelles Cells – life starts here Tissues Organs System Organism
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LevelsPopulationCommunityEcosystemBiosphere
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