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Learn about living things, how SI measurements are made, and the characteristics and organization of living things in this biology class. Review for the quiz and take notes before the bell rings!
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Hand in “How are SI Length Measurements Made?” before the bell rings Review for Quiz Notes Characteristics of living things Organization of living things "It is a rough road that leads to the height of greatness." Lucius Annaeus Seneca (4 BC - 65 AD) Learn about living things. Title: Biology 8/24/06 Class Topics Objectives: Handouts Wednesday, October 23, 201911:03 AM
Class Assignments What By When • How are SI measurements made? 8/24/06 • W.S. 1.1 (Quiz, Martian) 8/28/06 • Lab Safety and equipment quiz 8/28/06 • Chapter 1 Quiz 1 8/30/06 • Due this class period • Due next class period • Due in the future
Quiz – Lab Safety and Equipment • Identify and explain symbols • Identify equipment • Questions about safety rules • Locations of safety equipment
What Are Characteristics of Life? (7) • Cells • Reproduce • Obtain and use energy • Homeostasis • Heredity • Evolution • Interdependence
Flow of energy • Energy flow • Sun • Autotroph • Heterotroph • Herbivore, omnivore • Heterotroph • Omnivore, carnivore • Heterotroph • detrivore
Homeostasis • Maintaining a stable internal environment • Responding to external factors • Examples • Cold • Hot
Heredity • Pass on traits to offspring • Gene • Basic unit of heredity • Composed of DNA • Deoxyribonucleic acid • Changes to heredity • Mutation • Most harmful, others helpful • Sickle cell anemia
Heredity • Mutations (cont.) • Germ cells • Egg and sperm cells • Somatic cells • Body cells
Evolution • Change in the inherited traits of species over generations • Species – genetically similar organisms that can have fertile offspring • Natural selection • Organisms with favorable genes produce more offspring • More likely to survive
Interdependence • Organisms live and interact with others and their environment • Same species and other species • Ecology • Branch of science that studies interactions of organisms and their environment
Organisms Cells Homeostasis Interdependence Heredity Metabolism Reproduction Evolution
Video Clips • The Characteristics of Living Things • Characteristics of Living Things (TLC)
Organization • Atoms • Molecules • Organelles • Cells • Tissues • Organs • Systems
Organization • Organisms • Populations • Communities • Ecosystems • Biome • Biosphere - life zone of all living things 8km up and 8km down
Biosphere Biome Ecosystem Community Population Organism Systems Organs Tissues Cells Organelles Molecules Atoms