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Life 103 Exam 1
L103
28
Biology
Undergraduate 1
02/10/2014

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Term
Phylogeny
Definition
the evolutionary relationships of a
group of organisms (species level and higher)
Term
• Phylogenetic tree
Definition
: diagram of the ancestral
relationships among species
Term
Created the taxonomy system
Definition
Carl Linnaeus
Term
The two-part scientific name of a species is called.....
Definition
bionmial
Term
Commensalism
Definition
One benefits while one is unaffected
Term
Amensalism
Definition
One is harmed and one is unaffected
Term
Dispersal vs. migration
Definition
Animlas dont return from dispersal
Term
Two domains of prokaryotes
Definition
bacteria and archea
Term
peptidoglycan,
Definition
a network of sugar polymers often found in bacteria cell walls
Term
how do most bacteria propel themselves?
Definition
flagelli
Term
e fimbriae (also called
attachment pili)
Definition
which allow them to stick to
their substrate or other individuals in a colony
Term
Pro vs. Euk
Definition
Eukaryotic cells contain organelles that are membrane bound such as the nucleus
Term
the typical prokaryote has..........DNA
Definition
single circular chromosome
Term
Prokaryotic DNA from different individuals can be
brought together by
Definition
transformation,
transduction, and conjugation
Term
Obligate aerobes
Definition
require O2
for cellular respiration
Term
Obligate anaerobes
Definition
are poisoned by O2
and use
fermentation or anaerobic respiration
Term
Facultative anaerobes
Definition
s can survive with or without
O2
Term
Proteobacteria
Definition
• These gram-negative bacteria include
photoautotrophs, chemoautotrophs, and
heterotrophs
• Some are anaerobic, and others aerobic
Term
Proteobacteria Sub Groups
Definition
-Alpha Proteobacteria
-Gamma Proteobacteria
-Epsilon Proteobacteria
Term
Archea
Definition
Archaea share certain traits with bacteria and
other traits with eukaryotes
Term
Thermofiles
Definition
Thrive in hot and saline conditions.
Term
Methanogens
Definition
s live in swamps and marshes and
produce methane as a waste product
• Methanogens are strict anaerobes and are poisoned by O2
Term
Protists
Definition
Protist is the informal name of the “kingdom” of
mostly unicellular eukaryotes
Term
Protists can reproduce asexually or sexually - by the processes of...
Definition
meiosis and syngamy
Term
Five Supergroups of Eukaryotes
Definition
-Excavata

-Chromalveolata

-Stramenopila

-Rhizaria

-Unikonts
Term
Excavata
Definition
-Characterized by its cytoskeleton

-Has 3 subgroups
-Diplomonads
-Parabasalids
-Euglenozoa
Term
Chromalveolata
Definition
monophyletic and originated by a
secondary endosymbiosis event (w/ red alga)
Term
Stramenopila
Definition
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