Characteristics of Life LEVEL 3 QUESTIONS: 3-4 PER PAGE What is Biology? 1. The study of living things (organisms) 2. The study of interactions of living things 3. _________________-life ____________________-study of 8 Characteristics of Life Living Things are: 1. Made up of Cells a) CELL: Collection of living material enclosed within a barrier b) Cells are basic unit of life c) _______________________________: made up of one cell d) _______________________________: made up of many cells Levels of Organization *Cells have an orderly structure *Ex: cells make up tissues, tissues make up organs, and organs make up systems 2. Reproduce: a) Produce off spring which resemble parents b) _____________________ Reproduction: has only one parent c) _____________________ Reproduction: requires two parents 3. Grow and Develop a) ________________: increase in size and shape b) ________________________: mature over time c) Living things have a lifespan 4. Livings things are based on a universal genetic code a) _____________- DeoxyriboNucleic Acid b) _____________- RiboNucleic Acid c) Determines inherited traits from parents 5. Use/Need Energy a) Energy comes from food, used to maintain body b) ____________________: produce their own food c) ____________________: must consume food 6. Respond to their surroundings a) They react to a ________________ b) An action causes a reaction c) Reaction is called a ___________________ d) This involves one individual 7. Maintain a stable internal environment a) ________________________- process by which organisms maintain a relatively stable internal environment EX: sweating, panting, shivering, etc 8. Evolve a) Adapt to long-range changes in environment b) Change to better survive in environment c) these changes take place over a long period of time involving the entire species Summary 3-4 Sentences: Page 25