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Stu dyi ng L ife. Biology. The study of life. Characteristics of Life. Made of Cells Displays Organization Grows and Develops Reproduces Responds to Stimuli Requires Energy Maintains Homeostasis Adaptations evolve over time. MADE OF CELLS.
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Biology • The study of life.
Characteristics of Life • Made of Cells • Displays Organization • Grows and Develops • Reproduces • Responds to Stimuli • Requires Energy • Maintains Homeostasis • Adaptations evolve over time
MADE OF CELLS • All living things are made up of one or more cells. • Organisms made of only one cell are called unicellular. • Organisms made of more than one cell are multicellular. • Each part is made to have a specific function!
Displays Organization • Arranged in an orderly way. • Specialized cells are organized into groups that work together called tissues. • Tissues are organized into organs. • Organ systems work together to support an organism.
GROWTH AND DEVELOPMENT • Growth means adding mass (usually by dividing and adding more cells) • Development is adding abilities • Ex. A child learning to talk or walk
REPRODUCes • All living things make new living things.
Responds to Environment • Anything that is part of the internal or external envrionments and causes a reaction is called a stimulus. • The reaction is called the response.
Requires energy • Producers make their own food. • Consumers eat producers or other consumers to get energy. • Metabolism includes all the chemical reactions that break down or build up materials in a living thing. • The ultimate source of energy for all organisms is the sun. • All living things are connected into a biosphere.
Maintain stable environment • Living things keep internal conditions constant, or the same, through homeostasis. • If anything happens within or to an organism that affects its normal state, processes to restore the normal state begin.
Adaptations Evolve Over Time • An adaptation is any inherited characteristic that results from changes to a species over time. • Allows the organism to survive in a changing environment.