Characteristics of Life

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Presentation transcript:

Characteristics of Life

What is Biology? The study of life!

The Characteristics of Life… You Need 5 To Stay Alive!

Cellular Organization The basic unit of life is a cell. All living things are made up of one or more cells.

Internal (fluid) environment An organism is a society of cells . . . External environment Internal (fluid) environment Permission to use this slide (a matter of academic integrity) *If you are Kevin Patton's current student, you may use any slide for your own personal educational purpose. **If you are a student not currently in Kevin's courses, you may use any slide for your own personal educational purpose and are also encouraged to feed the lions at http://www.lionden.com/feed_the_lions.htm ***If you are a teacher you may use any slide for your own nonprofit educational purpose and are also expected to feed the lions for each use of a slide. http://www.lionden.com/feed_the_lions.htm ****Commercial use is available only with Kevin's express written permission. © KPatton@lionden.com . All rights reserved. DO NOT REMOVE THIS COPYRIGHT NOTICE LINE. Feedback, suggestions, corrections are most welcome! External environment . . . enclosed by a barrier

Homeostasis Living things must maintain a relatively stable internal environment to survive. Homeostasis: The maintenance of stable internal conditions in site of changes in the external environment.

Metabolism Living things need energy to do work. Metabolism: Physical and chemical changes in an organism in which energy is released or used. Living things use energy to grow and move

Reproduction All living things have a life cycle of growth, development and death. Species must reproduce to continue to exist. Reproduction- is the process by which organisms make more of their own kind from one generation to the next.

Heredity All living things are able to pass on traits to their offspring through genes. Genes are the basic units of heredity (found on DNA). Heredity: the passing of traits from parents to offspring.