1.5 Characteristics of Life Unity in Diversity. 1. ORDER All organisms exhibit complex organization.
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Transcript of 1.5 Characteristics of Life Unity in Diversity. 1. ORDER All organisms exhibit complex organization.
1.5 Characteristics of Life
Unity in Diversity
1. ORDER
• All organisms exhibit complex organization
2. Regulation
• The environment outside an organism may change markedly, but regulatory mechanisms maintain an organisms’ internal environments within limits that sustain life.
homeostasis • The ability to maintain
a relatively constant internal environment.
• EXAMPLES: body temp.
• Blood sugar levels• Water levels• pH
Kidney used for water regulation
Gets rid of wastes
3. Growth and development
• Each organism has a pattern of growth and development characteristic of its species.
4. Energy Utilization
• Organisms take in energy and transform it to perform all of life’s activities.
-metabolism -photosynthesis
5. Response to the environment
• All organisms respond to environmental stimuli.
Eye spot (responds to light)
I’m outa here!
6. Reproduction
• DNA lends itself to precise replication, and all organisms reproduce their own kind.
7. Evolution
• Reproduction underlies the capacity of species to change (evolve) over time.