Chapter 1 Section 3 Objectives Describe the characteristics of living things. How can life be studied at different levels?

Vocabulary Create a flapbook for the following words (begins on p.16): Biology Cell Sexual reproduction Asexual reproduction Metabolism Homeostasis Stimulus

Interactive Quickwrite: What is Biology ??

Biology The Study of Life

Is it alive?? In your notes copy the list below. By each tell if it is alive or not. ObjectAlive or Not?? Beetle Fire Water Grass Rock Robot Clock Moss

Characteristics of Living Things Video Clip—LifeLife In your group discuss and write a list of requirements for something to be ALIVE…

Characteristics of Life Biologists have established that all living things share 7 Characteristics of Life. CellsStimulusHomeostasis Metabolism Growth and Development Reproduction Change through Time

All Living Things… Are made up of units called cells Reproduce Grow and develop Obtain and use materials and energy Respond to their environment Maintain a stable internal environment (homeostasis) Change over time (as a group)

Cells A CELL—smallest unit of life Unicellular—organism with only one cell Multicellular—organism with many cells

Reproduction Sexual Reproduction—2 cells from different parents unite to produce a new organism Asexual reproduction—A single parent divides in half to form two new organisms

Growth and Development All organisms have a life cycle

Materials and Energy Metabolism—the process of building up and breaking down materials for energy Photosynthesis, eating

Response to Environment Reacting to the environment around the organism Example—a plant seed germinates and sprouts in response to warmer, wetter weather

Maintaining Internal Balance Homeostasis—process by which organisms keep their internal conditions stable Example—Shivering in the cold to stay warm, sweating to cool off

Change over time Evolution—As a group or species, organisms will change or evolve over time. Example—plants over millions of years adapting to the lack of water in deserts

Characteristics of Living Things Song

INTERACTIVE Characteristics of Life Booklet 7 sections For each section Explain what it is in 1-2 sentences Illustration

Levels of Organization Biology can be studied at many levels from very broad to very specific Copy the table “Levels of Organization” on page 21 into your notes

Assessment Answer questions #1,2, and 3 on page 22