Chapter 1 & 22 Flashcards
biologists study the ______________________, levels of life ranging from the global to the submicroscopic
biological hierarchy
the largest level of the biological hierarchy. The habitable part of plant earth. All ecosystems.
biosphere
all organisms living and nonliving components of a given area
ecosystem
all living organisms of a particular area.
community
all organisms of a species in an area.
population
a single living thing
organisms
organs working together for a common function. ex- nervous system
organ system
tissues working together for a common function. ex-brain
organ
cells working together for a common function
tissue
smallest living component
cell
make up cells ex- nucleus
organels
multiple atoms
molecules
smallest level of biological hierarchy
atom
The biological hierarchy:
atom molecule organell cell tissue organ organ system organism population community ecosystem biosphere
each level of the biological hierarchy is _______________________
the sum of its parts
new properties emerge at each level due to the ____________________________ of the parts at lower levels
interaction and arrangement
the first level at which the properties of life emerge
cells
organisms composed of one cell
unicellular
organisms consisting of more than one cell
multicellular
two cell type
prokaryotic
eukaryotic
small and simple cell
prokaryotic
large and complex with membrane bound organelles
eukaryotic
biologists organize life according to the principles of __________
taxonomy
taxonomy was established by
Carolus Linnaeus
Linnaeus goal was
naming the organisms and categorizing them
two taxonomy consists of two components
- nomenclature
- classification
species names are in __________
Latin
a common language allows unambiguous communication among all languages
Species names consist of two parts
genus
specific epithet
species name for human
homo sapien
biologists have discovered and named approximately ____________ species but we estimate ___________
1.8 million
10-100 million
_______________ categorizes this species diversity in more inclusive groups
hierarchical classification
taxonomy units
dum kids playing catch on freeway go splat domain kingdom phylum class order family genus species
dead: ___________
living: ___________
extinct
extant
taxonomy of humans
Eukarya animalia chordata mammalia primates hominidae homo homo sapiens
the outline or hierarchical form shows
the relationship between organisms
______ tha names group of organisms at any level in the classification hierarchy
taxon
3 domains
archae
bacteria
eukarya
two distinct domains of prokaryotic organisms
bacteria
archaea