CHARACTERISTICS OF LIFE

1
CHARACTERISTICS OF LIFE

• All organisms, no matter how different from each
  other, share certain features that are specific
  only to living things (you saw this with the lab
  we did!)

2
9 Characteristics of Life

• Energy
• Development
• Growth
• Adapt
• Reproduction
• Cells
• Homeostasis
• React/respond to environment
• Organization
• EDGAR CHRO

3
ENERGY

• Organisms need energy and they get it in
  different ways
• Heterotroph get food by eating others
• Autotroph make their own food
• The sun is the ultimate source of energy
• Why?

4
DEVELOP

• Process by which an organisms changes into an
  adult.
• Be careful. Not the same as evolve.

5
GROW

• Multicellular organisms grow or get bigger as a
  result of cell division (more cells to the body)
• A unicellular organism gets bigger but if it
  undergoes cell division, it becomes two organisms
  (reproduction)

6
ADAPT

• Organisms gain traits or behaviors through
  mutations that help them survive better in an
  environment. Not all mutations result in
  adaptations! Most are harmful and depend on the
  environment (natural selection)

7
REPRODUCTION

• Reproduction Process of organisms making new
  organisms like themselves
• HOW? Organisms transmit hereditary information
  (DNA) to their offspring
• Important for survival of species, not individual
• Two types, but sexual reproduction creates
  variety which is important for evolution

8
CELLS

• All Organisms contain at least one (unicellular)
  or more (multicellular) cells.
• In multicellular organisms, the cells do
  different tasks to help the organism survive
• Each cell can live on its own because a cell can
  perform the 9 characteristics of life!!!!!!!
• We have 100,000,000,000,000 cells

9
Homeostasis

• All organisms have the ability to maintain their
  conditions stable
• Things that need to be maintained stable
  temperature, blood pressure, water, mineral
  concentration, pH levels, etc
• Example 1 Body temperature control

When body temperature is below 98.6 then body
shivers to increase temperature back to 98.6.
When body temperature is too high, humans sweat
to decrease body temperature
The human body maintains a stable internal
temperature of 98.6F.
10
RESPOND

• Organisms respond to their environment for
  protection

11
Organization

• At molecular, cellular levels and at organism
  level