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10 Cards in this Set

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stromatolites
dome-shaped rocks that are composed of thin layers of sediment pressed tightly together, resembling the layers of an onion.
binary fission
DNA copies move to opposite ends of the cell as a cell splits in the middle.
endospores
dormant cell formed by certain bacteria taht can survive very harsh conditions
cyanobacteria
generates oxygen as a waste product of their photosynthesis
bioremediation
use of organisms to remoce pollutants from water, air adn soil
pathogens
bacteria and other microorganisms tha tcause disease
lytic cycle
a viral reproductive cycle in which copies of a virus are made within a host cell, which then bursts open. releasing new viruses
lysogenic cycle
a viral reproductive cycle in whihc the viral DNA is added to the host cell's DNA and is copied along with the host cell's DNA
retrovirus
member of a group of viuses such as HIV that carry reberse transcriptase, which catalyzes the syntesis of DNA from an RNA template
vaccines
deactivated varieties or small pieces of pathogens that stimulate the immune system to defend against the actul pathogen