Bio test 2 Flashcards
Lives in high salt environments
Halophile
Lives in high temperatures
Thermophiles
The domain comprised of organisms whose cells
contain true nucleus
Eukarya
single-celled microorganisms that have no cell
nucleus or any other membrane-bound organelles
Archaea
Group of microscopic single-celled organisms that
live in unfathomable numbers in nearly every
environment on earth
Bacteria
Fission
– Most divide every 1-3 hrs
– Very short generation times
– High rate of evolution
Bacterial Reproduction
do not reproduce sexually
– However, rapid division spreads mutations
fast
– Creates numerous cells with novel mutation
quickly
Genetic Diversity in Bacteria
Nitrogen Fixation, Decomposition,
Symbionts
Ecological Role of Bacteria
emission of light by
living organism via enzyme-catalyzed
reaction
Bacterial “headlights” of the Flashlight Fish
Bioluminescence
organisms that break
down dead or
decaying organisms
- Bacteria
– Fungi
– Arthropoda
Decomposers
Only bacteria that lack cell walls
* This make them very resistant to antibiotics
Mycoplasmas
Membrane Bound Nucleus
– Membrane bound organelles
* Mitochondria, Chloroplasts, Golgi
Eukaryotic Characteristics
Protozoa
Protozoan Feeding Styles
Heterotrophic Autotrophic
Photosynthetic protozoans
– Euglena, Vovox
Autotrophic
Consume other organisms
– Amoeba
Heterotrophic
in protozoans occurs via
sexual and asexual reproduction
Reproduction