Chapter 1 Flashcards
(17 cards)
Cells
Simplest unit of life
3 domains of life
Eukarya, Bacteria, Arachaea
Evolution
Change involving modification of characteristics of pre existing populations.
Vertical descent
Progression of changes in a lineage.
Horizontal gene transfer
Genetic exchange between different species.
Taxonomy
Grouping of species based on common ancestry.
Domain bacteria
Mostly unicellular prokaryotes that inhabit many diverse environments on Earth.
Domain archaea
Unicellular prokaryotes that often live in extreme environments.
Protists
Unicellular and small multicellular organisms now subdivided into seven broad groups based on evolutionary relationships.
Plants
Multicellular organisms that can carry out photosynthesis.
Fungi
Unicellular and multicellular organisms that have a cell wall, but can’t carry out photosynthesis.
Animals
Multicellular organisms that usually have a nervous system and are capable of locomotion.
Binomial nomenclature
The unique name of each species.
Genome
Complete genetic makeup of an organism
Proteome
The complete complement of proteins that a cell or organism can make.
Hypothesis
Proposed explanation for natural phenomenon.
Theory
Broad explanation of some aspect of the natural world that’s substantiated by a large body of evidence.
