2015-16

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Cellular Organization
Responsiveness
Reproduction
Metabolism
Heredity (and Evolve!)
Homeostasis
Growth and Development
An object must possess ALL of the characteristics of life (not just some) to be considered LIVING!

Made of cells?
Reproduce?
Metabolize?
Homeostasis?
Heredity (pass on traits)?
Respond to stimulus?
Grows and Develops?

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All organisms are made of one (unicellular) or more cells (multicellular)
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Cells are the basic units of structure and function of all living things.
http://www.usm.maine.edu/bio/courses/bio205/cell.jpg

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The levels of organization in biological systems begins with atoms and molecules and increases in complexity.
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Each structure in the organism has a specific function

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Atoms
Molecules
Organelles
Cells
Tissues
Organs
System
Organism
Population
Community
Ecosystem
Biosphere
At which level does life begin?

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All living organisms respond to stimuli from their environment.
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Organisms detect changes in their internal and external environment and react to the changes.

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All living organisms must have the ability to reproduce to ensure the survival of the species (not the individual).

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Living organisms require and utilize energy to do work.
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Living things get their energy from food.
Autotrophs make their own food using the sun’s energy.
Heterotrophs get their food from eating other organisms

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Living organisms inherit traits from the parent organism that help the species survive

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Homeo = same
Stasis = standing
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All living things maintain a state of internal balance
Temperature pH level
O
2
/CO
2 content
Glucose level
Electrolyte level
Like a thermostat in your house!

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All living organisms go through increases in body size by increasing the number of cells or size of each individual cell.
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Development is the process of natural changes that take place during the life cycle of an organism.

What are the red objects? Are they living?
What are the blue objects? Are they living?