Post on 12-Jan-2016
Chapter 1 Section 3Objectives
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.Object Alive or Not??
Beetle
Fire
Water
Grass
Rock
Robot
Clock
Moss
Characteristics of Living Things
• Video Clip—Life• 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.
Cells Stimulus Homeostasis
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