Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
32 Cards in this Set
- Front
- Back
pathogen
|
an organism that cause disease
|
|
saprophyta
|
an organism that feeds on dead matter
|
|
parasite
|
an organism that feeds on a living host
|
|
aerobic organisms
|
organisms that require oxygen
|
|
anerobic organisms
|
organisms that don't require oxygen
|
|
steady state
|
a state where members of a population die as quickly as they're born
|
|
exponential growth
|
population growth that is unhindered because of abundance of resources for an ever-increasing population
|
|
logistical growth
|
population that is controled by limited resources
|
|
plasmid
|
small circular section of extra DNA that gives one or more traits to a bacterium & can be reproduced seperatly from main bacterial genetic code
|
|
conjugation
|
temporary union of two organisms to transfer DNA
|
|
transformation
|
transfer of DNA segment from a nofunctional donor(dead) cell to a functional recipient cell
|
|
transduction
|
The process where infection by a virus results in DNA being transferred from one bacterium to another
|
|
edospore
|
the DNA & other essential parts of bacterium coated w/ several hard layers
|
|
stains
|
organisms from same species, that have markebly different traits
|
|
capsule
|
layer of sticky sugars that surround cell wall of bacterium, & deters infection fighting agents
|
|
cell wall
|
holds contents of bacterium together, & shapes bacterium
|
|
plasma membrane
|
made of phospholipids and proteins, regulates what the bacterium takes in from outside world
|
|
cytroplasm
|
fluid inside cell that supports DNA and ribosoms
|
|
fimbriae
|
fibrous bristles used for grasping, either for adhering to surfaces, or sex pili when used for grasping other bacteria for reproduction
|
|
flagellum
|
looks like a tail, used like a outboard moter to propel bacterium
|
|
ribosomes
|
produce complicated chemicals called proteins
|
|
chemosynthesis
|
process where bacteria uses chemical reactions to produce energy, then use it & other chemicals to produce food
|
|
binary fission
|
asexual reproduction for bacterium:
1. bacterium creates another DNA loop 2. cell wall elongates, pulling DNA loops apart 3. then bacterium seperate into two identical bacterium |
|
genetic recombination
|
bacteria exchange genetic information to increase genetic diversity of population
|
|
Gram stain
|
a way of staining samples to make microorganisms show up better, absorbed through cell wall
|
|
Gram-positive
|
blue color reaction, restained stain
|
|
Gram-negative
|
red color reaction, didn't restain stain
|
|
Phylum Gracilicutes
|
Gram-negative,
Class Scotobacteria- non-photosynthetic Class Anoxyphotobacteria- non-oxygen producing photosynthetic Class Oxyphotobacteria- oxygen producing photosynthetic |
|
Phylum Firmicutes
|
Gram-positive,
Class Firmibacteria- bacilli or cocci Class Thallobacteria- all but bacilli or cocci |
|
Phylum Tenericutes
|
bacteria lacking cell wall,
Class Mollicutes- only class in phylum |
|
Phylum Mendosicutes
|
bacteria w/ exotic cell wall,
Class Archaebacteria- only class in phylum |
|
Kinds of Bacterium
|
Coccus(sperical), Bacillus(rod shaped), Spirillum(spiral shaped)
|