Bio II - Quiz 1
how old are the first eukaryotes and when did oxygen become present in our atmosphere
1.5 billion years ago
how old are the first cells and prokaryotes
2.5 billion years old
how old are the oldest rocks
4 billion years old
scientific names are ___
Quercus rubra, Quercus phellos, Rose canina
these characters are traits that are present in a group of organisms that arose from a common ___ that lacked the character
ancestor
multicellular heterotrophs with internal digestion are
animalia
which eukaryotic kingdom does earthworms, sea stars and finch belong to
animalia
halophiles and thermophiles are
archaea
unique prokaryotes, many are extremophiles are in which kingdom
archaea
based upon DNA evidence, the domain ___ appears to have been the first to arise in the history of life
bacteria
cyanobacteria and nitrogen-fixing bacteria are
bacteria
the most abundant prokaryotes on earth are
bacteria
in the classification of organism, every species is assigned a ___, or two-part name
binomial
common names are ___
brown bear, willow oak, corn & black-headed grosbeak
the first word is the genus to which the organism belongs and is always italics and ___, the second word refers to the particular species and is always italics and all ___
capitalized; lowercase
___ is a way to trace evolutionary history.
cladistics
the distribution of these characters is then examined, and a branching diagram called a ___ can be constructed
cladogram
this history is traced by following the presence of ___ characteristics
derived
correct hierarchy of taxa from general to specific ___
domain, kingdom, phyla, class, order, family, genera, species
plants, fungi, animals and protists are in which kingdom
eukarya
multicellular and unicellular heterotrophs with external digestion are
fungi
which eukaryotic kingdom does mushrooms and yeast belong to
fungi
the first word refers to the ___
genus
for example, the scientific name for humans is Homo sapiens. the word homo designates the ___, and the word sapiens is the ___ name
genus; species
multicellular, photosynthetic eukaryotes are
plantae
which eukaryotic kingdom does moss, pine tree, nonwoody flowering plant belong to
plantae
bacteria are the most abundant ___ on earth
prokaryotes
the domain Archaea contains ___ and is more closely related to eukarya than to ___
prokaryotes; bacteria
unicellular eukaryotes together with the algae are
protista
which eukaryotic kingdom does paramecium, slime mold, euglena, dinoflagellate belong to
protista
a cladogram depicts the ___ evolutionary relationships among a group of organisms based on the available data.
relative
halophilic archaea live in very ___ places, and other groups of archaea are ___
salty; pH-tolerant
Scientists refer to organisms using a binomial called the ___ name.
scientific
the second word refers to the ___
species
a group of organisms at a particular taxonomic level is called a ___
taxon
Linnaeus devised a hierarchial system of ___, the naming and identifying of organisms
taxonomy
some members of the domain archaea are thermophilic, meaning that they can live in water that is too ___ for most other organisms
hot
the two-part name of an organism is called its scientific name and is usually written in ___
italics
scientific names are in a common language, ___, and biologists use them universally to avoid confusion
latin
members of the domain bacteria can fix ___ and play key roles int eh cycling of carbon and sulfur
nitrogen
most bacteria have cell walls containing ___
peptidoglycan