Intro to biology

Characteristics of Life and Vocabulary

Characteristics of LifeAll Living things posses these 8

traits

Are Made of Cells

Reproduce

Asexual - Splitting of cells-same old, same old- offspring's are clones

Sexual – Joining of cells (Genetic differences)

DNA Are based on a universal genetic code

DNA dexoyribonucleic acid

Traits passed from generation to generation.

Develop and Grow

Grow = producing more cells

Develop = change->metamorphismdifferentiation

Obtain and use Energy

Autotrophs (producers)(self) (feed) -----> photosynthesis

Heterotrophs (consumers) (other) (feed)

Metabolism = sum of all chemical reactions

Respond to their environment

Stimulus – a signal to which an organism responds

Biotic – livingAbiotic - not living

Homeostasis(steady) (state)

=Maintain an Internal Balance

As a group Evolution (Change over time)

Adaptation

trait that makes an organism

better suited to survive in their environment Evolve population changes over many years

Adaptation

trait that makes an organism

better suited to survive in their

environment Evolve

population changes over many years