Its Alive Its Alive

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Its Alive!! Its Alive!!!

• Life Processes
• Characteristics of Life

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1. Composed of Cells

• Single-cell organisms have everything they need
  to be self-sufficient.
• Example algae
• Multi-cellular organisms specialization
  increases until some cells do only certain
  things.
• Example plant leaf

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2. Composed of similar chemicals

• Chemicals are the building materials of cells.
• Water Most abundant
• Carbohydrates
• Proteins
• Lipids (fat)
• Nucleic acids

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3. Use Energy

• Obtain take in energy (eat)
• Must have food and water.
• Some make their own food and some
  gather food.
• Release use energy for maintenance, growth, and
  repair of injured parts.

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4. Grow and Develop

• Increase in size.
• Adding cells
• Increase the size of the cell

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5. Respond to surroundings

• Voluntary on purpose
• Find food
• Involuntary - reflex
• Heart beating faster when frightened
• Phototropism plants grow toward light sources
• Geotropism plants roots grow toward the center
  of the Earth due to gravity.

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6. Reproduction

• To produce offspring that is similar to the
  parents or the process of an organism creating
  more living things of its own kind.
• All living things must reproduce.

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Alive or Not? Why?

• Catfish
• Rock
• Turtle
• Levis Jeans
• Hamster

• Alarm Clock
• Soil
• Volcano
• Sunflower
• Little Sister

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Do you know what these terms mean?

• Structure
• Function
• Organism
• Life processes
• Cell theory

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Structure

• To make a strenuous effort
• A building
• The way in which something is constructed,
  arranged, or organized.
• Unfavorable or severe criticism

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Function

• Available supply, as of information or knowledge.
• Specific natural or characteristic action or use
  of anything purpose
• Utensil with a tube at one end and a wide,
  cone-shaped mouth at the other.
• Part of the elbow where the ulnar nerve passes
  very close to the skin.

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Life processes

• Cellular organization made of cells
• Composed of chemicals
• Use energy
• Grow and develop
• Respond to surroundings
• Reproduce

ALL OF THESE!
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Organism

• An animal that eats both plants and animals.
• A harmful substance in the air, water, or soil.
• The force pushing on an area or surface.
• A living thing.