Unity and Diversity of Life What characteristics do living creatures have in common? 2007-2008

Living creatures are ORGANIZED All made of the same collection of chemicals, but we are organized as… molecules proteins, fats, carbohydrates, nucleic acids carbohydrates proteins DNA

Living creatures are ORGANIZED All made of the same collection of chemicals, but we are organized as… organelles & cells plant cells & animal cells plant cell animal cell

Living creatures are ORGANIZED All made of the same collection of chemicals, but we are organized as… Tissues & organs & organ systems respiratory, circulatory, digestive, etc.

Living creatures RESPOND Respond to internal changes Homeostasis maintaining balanced conditions inside the body Respond to external changes

Living creatures use ENERGY Metabolism all the reactions your body performs to make & use energy eating & digestion & elimination of waste synthesis = building reactions cellular respiration = making energy mitochondria

Living creatures GROW & DEVELOP Change over an individual’s life time get bigger mature so they can reproduce

Living creatures REPRODUCE Make the next generation

Living creatures perform Life Processes We can organize the life processes using a pneumonic device. Huh? T-Transport (move materials in a body/cell) R-Respiration (Transforming food into Energy) R-Regulation (Maintain internal balance-Homeostasis) R-Reproduction (Make more cells/organisms) N-Nutrition (Obtaining food) E-Excretion (To remove metabolic waste) S-Synthesis (to make complex from simple) G-Growth (To get larger)

Don’t be a Dodo… Ask Questions!! 2007-2008

Essential Characteristics Conserved

Genetic Code

Central Dogma Watson Crick

Metabolism Glycolysis Krebs Cycle Oxidative Phosphorylation Anaerobic Respiration Aerobic Respiration

Eukaryotes