2The characteristics of living things Six characteristics that all living things shareHave cellular organizationContain similar chemicalsUse energyRespond to their surroundingsGrow and developReproduce
3Cellular Organization The cell is the basic unit of all living thingsUnicellular = one cellMulticellular = more than one cell
4The chemicals of lifeThe cells of all living things are composed of chemicalsWater is the most abundant chemicalCarbohydratesLipidsProteinsNucleic acids
5Energy Use Cells need energy to work We get energy by eating food. We are consumers or heterotrophsHow do plants get energy? Fungi?
6Response to Surroundings StimulusChange in surroundingsResponseAction or change in behavior
7Growth and Development Growth is the process of becoming largerDevelopment is becoming more complex
8Life comes from LifeLiving things come from living things through reproductionSpontaneous generationMistaken idea that living things can come from non living sourcesFrancesco Redi showed that flies do not come from decaying meatLouis Pasteur used a controlled experiment to show that bacteria do not arise from boiled broth
9What did Redi change?This is called the Independent variable
10What was the Independent variable in Pasteur’s experiment?
11The needs of living things Water-cannot survive long withoutNeeded in order toObtain chemicals from surroundingsBreak down foodGrowMove substances within bodiesReproduceFood-for energyAutotrophs make their own foodHeterotrophs cannot make their own foodLiving SpaceStable internal conditions-HomeostasisNeeded for cells to functionWhat happens when you get too hot?