Lunes, Setyembre 26, 2011

Characteristics of Life

What are the CHARACTERISTICS OF LIFE?
These are the life's characteristics that we need to survive and grow. These are the processes that we commonly use in our daily life. There 7 major characteristics of life:

7 Characteristics of Life
1. Homeostasis
----------Homeostasis is the internal balance of a living thing. These internal balance include the following:

  • Body Temperature
  • Blood Volume
  • pH Balance
  • Water balance
2. Reproduction
----------Reproduction is the ability of living things to reproduce of the same type. 
  • Asexual Reproduction-a single parent organism reproducing itself. 
  • Sexual Reproduction-two different parent organisms contribute genetic information. This involves the combination of male and female sex cells.
3. Growth and Development
----------All organisms grow and develop. Growth means to get bigger in size and development means a progression from a simpler or lower to a more advanced, mature, or complex form or stage.

4. Metabolism
----------All organisms use energy. The sum of chemical energy they use is what we call metabolism
  • Anabolism is the process of building up complex substances from simpler substances. (e.g building up cells and cellular components, photosynthesis)
  • Catabolism is the process of breaking down complex substances into simpler substances to release energy. (e.g digestion, cellular respiration)
5. Adaptation 
----------Adaptation is the ability to change over a period of time in response to the environment. It is the process that enables organisms to become better suited to their environment. Species obtain adaptations through evolution over great periods of time. (e.g desert plants have succulent waxy leaves and stems to store water)

6. Excretion
----------Excretion is the ability of living things to excrete waste

7. Organization
----------All living things have high level of organization being subdivided into cells, cells into organelles, and so on.

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