Characteristics of Living Things Organism = any living thing -bacteria -hippopotamus -you!!! CREDGREW (Mnemonic Device)

CREDGREW C = Cells!!! All living things are made up of cells.

CREDGREW C = Cells!!! All living things are made up of cells. Unicellular = single celled organism

Unicellular organism = single celled

CREDGREW C = Cells!!! All living things are made up of cells. Unicellular = single celled organism Multicellular = organism with many cells

CREDGREW C = Cells!!! All living things are made up of cells. Unicellular = single celled organism Multicellular = organism with many cells Prokaryotic = type of cell; very simple; evolved early; no nucleus

Prokaryotic cell = simple cell; no nucleus; evolved first Example = Bacterial cell

CREDGREW C = Cells!!! All living things are made up of cells. Unicellular = single celled organism Multicellular = organism with many cells Prokaryotic = type of cell; very simple; evolved early; no nucleus Eukaryotic = type of cell; complex; evolved later; contains nucleus and other organelles

Eukaryotic cell = more complex; evolved later; contains a nucleus (and many other organelles) Example = corn cell

CREDGREW R = Reproduction; All organisms reproduce Asexual reproduction - one parent Sexual reproduction - two parents

CREDGREW E = Energy; All organisms use energy from “food”; this is usually in the form of glucose (a sugar) Autotroph = an organism that makes it’s own food using the sun; also known as a “producer”; examples are plants and algae Heterotroph = get food from other organisms; also known as a “consumer”

CREDGREW D = DNA (Deoxyribonucleic acid); all cells contain DNA; DNA is the chemical that genes are made of Double helix

CREDGREW D = DNA; all cells contain DNA; DNA is the chemical that genes are made of G = Grow; all organisms grow

CREDGREW D = DNA; all cells contain DNA; DNA is the chemical that genes are made of G = Grow; all organisms grow R = Response; all organisms respond to stimuli (anything in an organism’s environment that causes it to react)

CREDGREW D = DNA; all cells contain DNA; DNA is the chemical that genes are made of G = Grow; all organisms grow R = Response; all organisms respond to stimuli E = Exchange; all organisms exchange gasses; take in CO2 and let out O2

CREDGREW E = Exchange; all organisms exchange gasses; take in CO2 and let out O2 W = Waste; all organisms produce waste Examples: CO2, ammonia, undigested food