The Three Domains Of Life

Bacteria, Archaea and Eukarya are the three domains of life.

The cellular composition of organisms. Archaea are the smallest and simplest types of cells, those without a nucleus.

Bacteria: -Prokaryotic, unicellular organisms -Lack a membrane-bounded nucleus -Repoduce asexually -Heterotrophic by absorption -Autotrophic by chemosynthesis or by photosynthesis -Moved by flagella Hetertrophic bacteria

Archaea: -Prokaryotic, unicellular organisms -Lack a membrane-bounded nucleus -Reproduce asexually many are autotrophic by chemosynthesis; some are heterotrophic by absorption -unique rRNA base sequence -Distinctive plasma membrane and cell wall chemistry

Eukarya: -Eukaryotic, unicellular to multicellular organisms -Membrane-bounded nucleus -Sexual reproduction -Phenotypes and nutrition are diverse -Each kingdom has specializations -Flagella, if present, have a 9+2 organization

Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition

Animalia, Plantae, Fungi and Protista

Combines two names into one to give all species unique scientific names. The first part of a scientific name is called the genus. The second part of a species name is the specific epithet.

Dichotomous Keys is a tool that is used to identify organisms. Involves a CHOICE BETWEEN 2.

Physical Characteristics, Reproductive Methods and Molecular Sequencing.

Radial- Can be symmetrical everywhere you cut it in half. Bilateral- Only symmetrical by one cut.

the arrangement of animals and plants in taxonomic groups according to their observed similarities