Bio 102 Flashcards
Biospheere
Deals with life on a global scale
Ecosystem
A distict geographical region ex) tropical rain forest
Biota
Living things
abiotic
nonliving things
Community
all of the living species within an ecosystem
Population
a group of interacting individuals belonging to the same species.
Organisms
Individual Organism
System
groups of organs that work together to achieve a common fuction
Organ
a structure composed of numerous tissues that work together
Tissue
a sheet of cells that fuction together
Cell
the basic unit of life
Organelles
cellular components
Molecules
chemical components of an organelle.
Cellularity
all organisms are comprised of cells
Reproduction
all organisms are capible of producting offspring
Nutritional Requirements
all organisms require nutrients(glucose)
Irritabilty
alll organisms rerspont to stimuli
Homeostaisis
all organisms change in order to remain the smae
Autotrophic
self feeders ex) photosynthesis
Heterotropic
Feeding from a different source
Mutation
all organisms experience changes in their genetic material
Adaptation
all species experience the evolution of features that better equaip them for survival.
Taxonomy
Scence dealing with the naming and classification of organisms
Robert Wittaker
developed the presently used 5 kingdom system
Kingdom Monea
Bacteria and cyanobacteria, Unicellular, Prokaryotic, Some species are motile, Cell walls of peoptidoglycan
Kingdom Protista
Mostly unicellular, Eukaryotic, Algae is autotrophic, Some species are motile
Kingdom Fugi
Mostly multicellular, Eukaryotic, Non-motile, Autotrophic
Kingdom Plantae
Multicellular, Eukaryotic, Autotrophic, Non-motile
Kingdom Animalia
Multicellular, Eukaryotic, Heterotrophic, Motile at some poin in their lives.
Domain Bacteria
Unicellular prokaryotes, “contemperary bacteria”
Domain Archaea
“Ancient” bacteria, Contains bacteria today that are only found in extreme environmental conditions
Domain Eukary
Contains all eukaryotic organisms
Classification order
Kingdom Phylum Class Order Family Genus Species
nomenclature
way of naming
First name/ Second name
genus /species
Bionomial nomenclaute
should be italicized First letter should be capitilized Homo sapiencs
Phylogeny
the evolutionary history of a species or a group of sepcies
Fossils
a preserved remnant or impression of an organism that lived in the past
Biogeography
the geographic distribution of past and present species
Pangea split into 2 landmasses
northern-Laurasia southern-Gondwana
Adaptive radiation
the emergence of numerous species from a common ancestor
Comparative anatomy
identifying similar features shared by different species
Homologus structures
structures that are similar in structure and function and have shared ancestry
Analogous sturctures
structures that have a similar function for two different organisms but differ somewhat structurally
Comparative embryology
identifying similarites in embryos of differetn species
Comparative biochemistry
similarities in the biochemical molecules of 2 different species
Monophyletic
Whole block
Paraphyletic
Arm
Poyphyletic
Top portion
Cladogram
Diagonal
Phylogram
genetic changes
Viral genome
contains nucleic acid
Capsid
protein shell enclosing genome
Capsomeres
protein subunits of the viral capsid
Viral encelope
membranous coveing over capsids with glycoprotein receptors
Tobacco Mosaic virus
First Virus discovered
Adenoviruses
icosahedron
Influenza virs
8 different RNA molecules
Bacteriophages (T4)
most comples of all viral capsids
Adolf Mayer
studied diseased tobacco plants , demonstrated transmission by rubbing spa from diseased leaves to healty ones, assubed agent was small bacteria
Dimitry Ivanowsky
Applied sap from diseased leaves to healthy leaves
Martinus Beijerink
The man who first gave the name virus
Wendell Stanley
Crystallized the infections particle and identified it structure
Electron Microsophy
allowed form conformation of TMV structure and the identification of ther virusess
Lytic cycle
where the sopres explode
Lysogenic cycle
Where the cell is denatured
Restriction enzymes
degrade the phage DNA when injected by the bacteriophage
Class 1
ds DNA
Class 2
ss DNA
Class 3
ds RNA
Class IV
ss Rna ( RNA serves directly as mRNA when in host cell)
Class V`
ssRNA (RNA used as a template for mRNA synthesis in host cell)
Class IV
ss RNA used as a template for DNA synthesis
what enzyme molecule in HIV allows for the host cell to produce DNA from viral RNA
reverse transcriptace
Opportunistic infections
infections that arise secondarily due to increased viral and low helper T-cell levels
Viroids
infections circular RNA molecules
Prions
Infections protein molecules
Spongiform encephalopathies
BSE = mad cow disease , Scrapie- Identified in cheep , Wasting disease- identified in mule
Coccuss
Spherical
Bacillus
rod-like
spiral
curve like
Vibrio
comma shaped(1 curve)
Spirilla
S shaped (2 cureves)
Spirochete
cork screw
Diplo
2 cells attatched
Strepto
Chain of cells
staphylo
grape-like cluster of cells
tetrad
4 cells attatched
Capsule
jelly-like outer coating
Cell wall
- protective covering of peptidoglycanan
Plasma (cell) membran
primarily phospholipid bilayer with no cholestoral
Chromosome
primary genetic material DNA
Plasmid
additional DNA arranged in small cirvles
Ribosomes
four protien synnthesis
Flagella
for locomotion
Pili (Fimbraie)
hair-like extensions
Indigo blue
capsule staining
Grahm +
bacteria within the cell wall consisting of multple layers of peptidoglycan , VIOLET
Grahm -
Bacteria with cell wall cnsisting of few layers of peptidoglycan, RED
Lophotrichous
one end
Amphitrichous
both sides
Peritrichous
any part
Endospores
thick-coated, resisstant cell produced by certain bacteria when exposed to harsh conditions
Vegitative Cycle
nothing happens
Sporulation
Mom blows up
Replication fork
Replicated the bacterial chromosome
transformation
a change in genortype and phenotype due to assimilation of external DNA by a cell
Robert Griffen
first preformed Transformation
Transduction
a dna transfer process in which bacteriphages carry bacterial genes from one host cell to another
R-Strain
Rough cells non-pathogenic
S-Strain
Smooth cells- pathogenic
Conjuction
The direct transfer of DNA b/w 2 bacterial cells that are
Energy
Phot- uses Light / Chemo - uses organic or inorganic molecules
Carbon
Auto- cuses carbon dioxide Hetero- uses organic compounds
photoautotroph
Light Co2
Chemoautotroph
Inorganic chemicals CO@
Photoheterotroph
Light Organic Compounds
Chemoheterotroph
Organic Compounds
Saprobes
Source of organic cmpounds dead animals
Parasites
Another living organism
Methanogens
Methane
Sulfur-Fixing bacteria
Sulfate
Nitrogen-fixing bacteria
Nitrate
Acidophiles
Ph <6
Psychrophiles
Cold loving
Mesophiles
Moderate temp loving
Thermophiles
Heat loving
Cyanobacteria
Blue green algie
Photoheterotrophs
Light + organic compounds
Heterocysts
fix nitrogen
Halophiles
Salt
Obligate aerobes
Use oxygen for cellular respiration
Faculative anerobes
Can only use oxigen if present but can preform fermintation
Obligate anaerobes
Preform only fermentation
ioremediation
the use of living oganisms to detoxify the earth
Decomposition
the break down of dead organic matter and the recycling of inorganic nutrients
Sybiosis
the relationship where 2 organisms coexist
Mutualsim
both benifit
Commensalism
one benefits the 2nd is not affected
Parasitism
One benifits, the second is harmed
Genetic engineering
the direct manipulation of genes fro practical ppurposes
Causes tuberculosis
mycobacterium tuberculosis
Causes cholera
Vibrio cholerae
Lyme disease
Caused by borrlia burgdorferi
Syphilis
Treponema pallidum
Gonorrhea
Nisseria gonorrhoeae
Chlamydia
Chlamydia trochamatis
Anthrax
Bacillis anthracis
Botulism
Clostridium botulinum
Endotoxins
Released when bacteria die
Exotoxin
released by living bacteria and can persist even whe nbbcteria are gone
Food spoling
the natural decay of food by bacteria
Food posioning
the release of toxins by bacteria during the decaying process
Lynn Margulis
introduced endosybiotic theory
Endosymbiotic theory
explains the evolution of original eukaryotes from prokaryotes
Secondary endosymbiosis
the evolution of the divers protistan lineages
Endosymbiosis
studies suggest that all plastids evolved from a gram-negatice cyanobacterium
Phylum Diplomonadid
2 equally sized nuclei, DDiplomonads
Parabasala
parabasalids, parasites or mutualistic sybinents
Kinetoplastida
heterotrophic, undulating membreane
Euglenophyta
mixotrophic, chloroplast with primary chlorophylls
Alveolates
sacuse under the plasm membran that regulate water
Dinoflagellata
perpendicular grooves armored body
Pfiesteria shumwayae,
beating of the spiral flagellum
ampicomplexa
unicelluare parasites of vetebrates, comples life cycle within hosts and vectors, produce spores
Ciliophora
Oral groove , macronuleus, micronucles, vaclues
Stramenophiles
One hairy leg
OOmycota
aquatic water molds, heterotrophic
Bacillariophyta
majority of plankton, unique shapes and designs
Chrysophyta
Golden algae
Phaelophyta
Brown alge
Amoebozoans
feed by phagocytosis use pseudopodia for movemet
Gymnamoeba
Naked dad shelled free-living amoebas, Proad pseudopodia for movement, feed by phagocytosis, large nucleus
Entamoeba
parasitic amoebast, pseudopodia for movement, feed by phagocytosis
entamoeba historlyitca
causes amebic dysentery through contaminated drinking water
Myxogastria
plasmodia slime molds, brightly colored yellow or orange
Dictyostelida
Cellular slime molds, terrestrial and heterotrophic
Rhodophyta
Red algae, multicellular, 4000 species,
Chlorophyta
Green algae, unicellular and multicellular 7000 species
Volvox
colony is a hollow ball wihc is comprised of hundreds of biflagulated cells
What term refers to a highly organized mass of DNA contained within a large mitochondrion that can be seen in organisms such as Trypanosoma?
Kinetoplas
Which specific term refers to the interlocking protein strips that cover the body of a euglenid?
Pellicle
hich specific cellular form of Plasmodium vivaxis release from ruptured liver cells and targets red blood cells?
Merozoite
During Paramecium conjugation, what is exchanged between the two temporarily joined individuals?
Micronuclei
Which specific substance comprises the cell walls of organisms in Phylum Phaeophyta?
Algin