Biological Organization

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Biological Organization

• And Characteristics of Living Things

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Characteristics of Living Things

• Made of cells
• Reproduce
• Universal genetic code
• Grow and develop
• Obtain and use energy and materials
• Respond to the environment
• Maintain a stable internal environment
• Change over time

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Made of cells

• A cell is a collection of living matter enclosed
  by a barrier that separates the cell and its
  surroundings.
• Unicellular single celled
• Multicellular many celled

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Cells
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Reproduction

• Sexual reproduction 2 cells unite from
  different parents
• Asexual reproduction new organism from the same
  parent

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Reproduce
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Genetic Code

• Organisms traits carried in their DNA.

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Made of the Same Materials
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Growth and Development

• Each organism has a distinct life cycle.

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Materials and Energy

• Organism need a steady supply of energy to carry
  out life functions.
• Metabolism is the chemical reactions that break
  down materials needed for life processed.

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Water and Energy
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Respond to the Environment

• The environment is constantly changing so
  organism must change or adapt or face extinction.

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Respond to Environment
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Maintaining an Internal Balance

• Homeostasis is the process by which organisms
  keep their internal conditions relatively stable.
• If homeostasis is disrupted in a major way, the
  organisms will not survive.

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Evolution

• Over time groups of organisms over hundreds of
  thousands or millions of years will change or
  evolve.

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Evolve
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Branches of Biology

• Many levels at which biology can be studied, they
  include molecules, cells, organisms,
  populations, communities, and the biosphere.
• Branches of Biology include Biology, Botany,
  Zoology, Ecology, Paleontologists, and Ethology.

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Levels of Biological Organization

• Molecules groups of atoms
• Cells smallest unit of living things
• Tissues groups of cells working together
• Organs- groups of tissues working together
• Organ systems groups of organs working together
• Organism organ systems working together.
• Population group of organism in the same area
• Community Populations that live together in a
  defined area.
• Ecosystem Community and its surroundings
• Biosphere The part of the Earth that contains
  the ecosystems

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Organization