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Chapter 1.1
In Life's hierarchy of organization, new properties emerge at each level
15
Biology
9th Grade
09/11/2011

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Term

What is the order of life's hierarchy of orginazation?

Definition
1.Biosphere 2.Ecosystem 3.Community 4.Population 5.Organism 6.Organ System 7.Organ 8.Tissue 9.Cell 10.Organelle 11. Molecule
Term
Define Biosphere
Definition
All the environments on earth that supports life.
Term
Define ecosystem.
Definition
Consists of all the organisms living in a particular area aswell as all the nonliving physical components of the environment with which the oganisms interact. ex. air, soil, water, and sunlight.
Term
Define community.
Definition
The entire array of organisms inhabiting a particular ecosystem.
Term
Define Species
Definition
 A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
Term
Define population.
Definition
A population consists of all the individuals of a species living in a specified area.
Term

Define Organism.

 

Definition
An individual living thing.
Term
Define Organ System
Definition
Consists of several organs that work together in performing specific functions.  ex. digestive system or nervous system.
Term
Define Organ
Definition
 A grouping of tissues into a distinct structure that performs a specific function. ex. Brain, heart, and liver.
Term
Define Tissue
Definition
Organs are made up of tissues that are made up of a group of similar cells that performs a specific function.
Term
Define cell.
Definition
A basic unit of living matter seperated from it environ ment by a plasma membrane.  The building blocks of life.
Term
Define Organelle.
Definition
A membrane bound structure that perfoms a specific function in a cell. ex. nucleus and mitochondra.
Term
Define molecule.
Definition
A clustor of atoms held together by chemical bonds. ex, DNA (deoxyribonucleic acid).
Term
Define Emergent Properties.
Definition
New properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases.
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