Big Q: What characteristics do all living things share? Studying Life Big Q: What characteristics do all living things share?

Engage - Living thing or not? List some ways in which all living things are alike. Would you consider an icicle a living thing? How about a rock? A sea otter?

Explore - A guided Tour Walk around to each station and determine if you think the items are living or non-living things. Provide evidence for your conclusion. Station 1 - Ebola Virus Station 2 - Zucchini Station 3 - E. Coli Bacteria Station 4 - Amoeba Station 5 - Cork Station 6 - Log Station 7 - Platypus Station 8 - Heart Cell Station 9 - Wood Block Station 10 - Paramecium

Explain - Biology Biology Biology - the study of life Bio = life

Explain - Genetic Code All living things are based on a universal genetic code: This information is: 1. Stored in organisms (as DNA) 2. Used for growth(1) 3. Used for reproduction(2)

Elaborate - Growth and Reproduction Growth can occur by: Cell Size (synthesis) - single celled organisms Number of cells - multicellular organisms Reproduction: Asexual - one parent, identical offspring Sexual - two parents, offspring not identical

Explain - Differentiation Living things grow and develop: Differentiation - cells replicate through mitosis and become specific tissue. Synthesis (3) - chemical process where small molecules are combined to form large molecules

Explain - Stimulus and Response Living things respond to their environment: They do this through: 1. Regulation(4) - control of life activities 2. Nutrition (5) - obtaining and processing food 3. Respiration (6) - energy is released from food molecules 4. Transport (7) - absorption and circulation of materials 5. Excretion (8) - removal of liquid waste

Elaborate - regulation Regulation in animals requires: 1. Nervous System - stimulus/response model 2. Endocrine System - hormones (chemical messages) ***Stimulus - nerves pick up information from the outside ***Response - the brain tells the body how to adjust to the change

Elaborate - Nutrition Nutrition - provides the body with a source of energy Can be done two ways: 1. Autotrophic - make their own food 2. Heterotrophic - cannot make their own food Ingestion - take in food Digestion - breaking down food Egestion - removal of solid undigested food

Elaborate - Respiration Respiration - food is ingested, broken down and used by the mitochondria to make energy Two types: 1. Aerobic Respiration - uses oxygen to make energy 2. Anaerobic Respiration - makes energy without oxygen

Explain - Balanced Body Living things maintain a stable internal environment Living things obtain and use material and energy Homeostasis - keeping a stable internal environment Metabolism - chemical reactions that organisms use to build up or break down materials

Evaluate - What are the Life Processes List all 8 life processes, and re-evaluate the items from the beginning of class. Now do you think they are living or non- living objects? Nutrition Excretion Growth Transport Synthesis Reproduction Respiration Regulation