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1. Basic unit is the cell2. Reproduce3. Have DNA4. Grow & develop5. Obtain & use energy6. Respond to their

environment7. Maintain homeostasis8. AS A GROUP, living

things change over time (evolve)

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Cells are the smallest living unit of organisms.Cells are complex and highly organized.

Organisms may be composed of a single cell (like bacteria) or many cells (like plants, animals, and fungi).

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Sexual Reproduction Involves 2 parents Egg fertilized by sperm to make a ZYGOTE Offspring DIFFERENT from parents

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Asexual reproduction

Involves a single organism or cell

Cell divides Offspring

IDENTICAL to parent

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DNA (deoxyribose nucleic acid) carries the genetic code for all organismsAll organisms contain DNA

DNA codes for the proteins that make up cells & do all the work

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Organisms grow by producing more cells & by cell enlargementOrganisms develop as they mature into an adult organism

Monarch to chrysalis

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Autotrophs can make their own food

Heterotrophs can NOT make their own food

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These cyanobacteria stromatolites are in shark bay, Australia. They are halophiles!

Organisms respond to temperature, water, food supplies, etc. in order to survive & reproduce

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Keeping the internal environment of the cell or organism within the ranges required for lifeStable internal conditions of pH, temperature, water balance, etc.

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Groups of organisms (not individuals) change over time in order to survive within changing environments.Fossil records show changes in groups of organisms

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Atoms Molecules Organelles Cells – life

starts here Tissues Organs Organ System Organism Population Community Ecosystem biosphere

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Boston Dynamics

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