Rabu, 27 Jun 2012

BIO 121:hirarchy of biological organization

CELLULAR LEVEL

ATOM
- the smallest unit of an element that maintains the properties of that element.

MOLECULE
-two or more that same element or different ones combined together.

ORGANELLE
-found inside cell that has specific function.

CELL
- the smallest unit that has ability to live and reproduce independently.

TISSUE
-group of cells that combined together to carry out particular functions.

ORGAN
-group of different tissue that combined together to carry out particular job.

ORGAN SYSTEM
-tissue and organ combined together to carry out particular set of function.

ORGANISM
-living things that capable to reproduction,growth and stimuli.

ECOLOGICAL LEVEL


ECOLOGY
-study of interactions that take place between organisms and their physical enviroments.

SPECIES
-group of organisms that similar structure, funtions and behaviour.

POPULATION
-group of same species live the same place at the same time.

COMMUNITY
-a group of populations that different species occupying the same place at the same time.

ECOSYSTEM
-the populations of plants and animals that interact each other in given area with abiotic

BIOSPHERE
- portion of the Earth that support living things.





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