study of biology
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Study of Biology. What is Biology?. Biology is the study of all living things Living things are called organisms Organisms include bacteria, protists , fungi, plants, & animals. All Living Things Share Common Characteristics. Basic Unit is the Cell (Have order) They Reproduce - PowerPoint PPT PresentationTRANSCRIPT
Study of Biology
What is Biology?Biology is the study of all living things Living things are called organismsOrganisms include bacteria, protists, fungi, plants, & animals
All Living Things Share Common
Characteristics1. Basic Unit is the Cell
(Have order)2. They Reproduce3. All Based On Universal
Genetic Code (DNA)4. Grow & Develop
Common Characteristics
5. Obtain & Use Materials & Energy (Metabolism)
6. Respond To Their Environment
7. Maintain A Stable Internal Environment
8. AS A GROUP, Living Things Evolve, That Is They Change Over Time
Characteristics of Organisms
All Organisms are made of Cells
Cell FactsCells are the smallest living unit of an organismCells are complex & highly organized
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
Organisms Reproduce to Pass on their Genetic Traits
Two Types of Reproduction
Sexual Asexual Reproduction
Reproduction
Cells Have a Genetic Code
Genetic Code
DNA carries the genetic code for all organismsAll organisms contain DNA
Organisms Grow & Develop
Growth & DevelopmentOrganisms grow by producing MORE CELLS & by cell ENLARGEMENTOrganisms develop as they mature into an adult organism
Cells Require Food & Energy
MetabolismSum of all the chemical reactions in an organismAll require energySunlight is the ultimate energy for life on Earth
MetabolismCellular Respiration –Cells releasing the chemical energy stored in foods
6O2 + C6H12O6 6CO2 + 6H2O
Organisms Respond to Stimuli
Organisms Respond to stimuli (Temperature, Water, Food Supplies, etc.) In Order To Survive & Reproduce
Maintaining Stable Internal Environment
Keeping The Internal Environment balanced = (Homeostasis)Stable internal conditions of pH, temperature, water balance, etc.
Living Things EvolveGroups Of Organisms (Not Individuals) Change Over Time In Order To Survive Within Changing Environments.Fossil records show changes in groups of organisms
Life is Organized on Several Levels
LevelsBiosphereEcosystemCommunityPopulation
LevelsOrganismsOrgan SystemOrgansTissuesCells – life starts hereOrganellesMoleculesAtomsSubatomic Particles