What is life? Chapter 2 section 1 PROTISTS ANIMALS FUNGI PLANTS BACTERIA ARCHAEA

Classification Groups Bacteria/Archaea- Prokaryotic,Unicellular, both Hetero and Autotrophs Protists- Eukaryotic, Unicellular and Multicellular, Hetero and Autotrophs Fungi- Eukaryotic, Unicellular and Multicellular, Heterotrophs Plants- Eukaryotic, Multicellular, Autotrophs Animals- Eukaryotic, Multicellular, Heterotrophs

Key Terms Organism Cell Unicellular Multicellular Stimulus Response Development Spontaneous generation Autotroph Heterotroph Homeostasis

Chapter 2 Living Things I . What is Life? a. organisms A. The Characteristics of Living Things 1. Cellular Organization b.____________________ c.____________________ d.____________________ 2.______________________________________________________ 3.______________________________________________________ 4.______________________________________________________ e.____________________ f.____________________ 5.______________________________________________________ g.____________________ 6.______________________________________________________ B._________________________________________________________ h.____________________ 1.______________________________________________________ C._________________________________________________________ i.____________________ j.____________________ k.___________________

Characteristics of Living Things All living things have cellular organization, contain similar chemicals, use energy, respond to their surroundings, grow and develop, and reproduce. All living things arise from living things through reproduction. All living things must satisfy their basic needs for water, food, living space and stable internal conditions.

Experiments Pasteur’s Experiment Redi’s Experiment

Heterotroph Autotroph Heterotroph- organisms that can not make their own food. Autotroph- organisms that make their own food. Auto- self (producer) Hetero- other (consumer) Troph- feeder

Every organism can be classified at 7 different levels - kingdom, phylum, class, order, family, genus and species. Each level contains organisms with similar characteristics. The kingdom is the largest group and very broad. Each successive group contains fewer organisms, but the organisms are more similar. The species is the smallest group and is very narrow. Organisms within a species are able to mate and produce fertile offspring.

? Assessment ? 1.a. List the 6 characteristics of living things? b. a bird sitting on a tree flies away as you walk by. Which of the life characteristics explains the birds behavior? c. explain why the tree, which does not move away, is also considered a living thing? 2. a. What was meant by the idea of spontaneuos generation ? 3.a. What four things do all organisms need to survive? b. Which need is a fox meeting by feeding off berries? c. The artic fox has thick, dense fur in the winter and much shorter fur in the summer. How does this help the fox maintain homeostasis?