chap 3 Flashcards
(44 cards)
have a true nucleus,
Eukaryotes
DNA is enclosed by a nuclear membrane.
Eukaryotes
eu means
true
caryo refers to
nut or nucleus
Most animal and plant cells are 10 to 30 um in
diameter, about 10 times larger than most prokaryotic cells
Eukaryotes
Eukaryotes
prokaryotes
A typical prokaryote that is cell is about 1 um wide
and 2 to 3 um long
prokaryotes
Reproduction of procaryotic cells
binary fission
simple division of one cell into two cells
binary fission
science of naming, describing and classifying organisms
Taxonomy
taxonomy consists of three separate but
interrelated areas:
classification
nomenclature
identification
arrangement of organisms into taxonomic groups on the basis of similarities or relationships
classification
include kingdoms or domains, divisions
or phyla, classes, orders, families, genera, and
species.
taxa (taxon)
the assignment of names to the various taxa
according to international rules.
Nomenclature
example of nomenclature
homo sapiens
determining whether an isolate belongs to one of
the established,
identification
An organism’s complete collection of genes is
referred to as the organism’s
genotype or genome
An organism’s complete collection of physical characteristics is known as the organism’s
phenotype.
genus
first name
specific epithet
second name
genus and specific epithet are used in
the binomial system of nomennclature
genus and specific epithet used together is called
species
abbreviation that is used to designate a single species
sp.
abbreviation that is used to designate more than one species
spp.