Biology Intro Flashcards
Biology
study of life
atom
smallest unit of matter
molecule
2+ joined atoms
molecules of life include
Carbs, proteins, lipids, nucleic acids
molecules of life
made by all living things and only living things
cell
smallest unit that can live and reproduce alone
tissue
organized cells that interact together to perform a specific job or function
type of tissue: blood
connective
examples of tissues
epithelial, muscle, connective
organ
made of two+ tissues interacting to perform a specific job or function
organ system
organs interacting, physically, chemically or both in a task.
multicellular organism
individual made of different types of cells
population
group of single or multi celled individuals of same species occupying specific area
community
all populations of all species occupying specific area
Ecosystem
community interacting w its environment
biosphere
all regions of earth’s waters, crust and atmosphere that hold organisms
how many species are named?
1.8million
how many species likely exist?
100million
who invented 2pt naming system
carolus linnaeus
two part naming system
genus + species
genus
grouping of species w certain traits in common
Groupings
Domain, kingdom, phylum, class, order, family, genus, species
three domains
bacteria, archaea, eukarya
prokaryotic kingdoms
bacteria and archaea
what were the prokaryotic kingdoms originally grouped as?
monera
eukaryotic kingdoms
eukarya