Lecture 11 Flashcards
(22 cards)
What is the Ed DeLong Discovery
Before, archaea were thought to be only extremophiles. He found them in normal temp, oxygenated sea water.
What two types of archaea did ed de long find?
Crenarchaeota and Euarachaeota
What percentage of Small subunit rRNA did Ed DeLong use
2%
What is metagenomics
Isolating the DNA of one thing from all the other microorganisms in a sample.
Microbial Ecology
Study of microbes in their surroundings.
What happens when microbes interact and compete with other organisms in their environment
In the process of living, they may greatly modify their environment
What is the foundation of microbiology
The study of microbes in pure culture
The number of culturable microbes is very ___-
low
What does CFU mean
Colony Forming Units
What sample is especially unculturable, seawater or freshwater
Sea water
What is the average culturability of seawater
0.001 - 0.1 %
What is an ecosystem
A community of living organisms in conjunction with the nonliving components of their environment, interacting in a system.
What are some nonliving components of an ecosystem
Air, Water, soil or minerals
What are the three ways that communities of organisms can be divided?
Primary producers, consumers & decomposers
Which community of organisms capture energy through photosynthesis
Primary Producers
Which ingest/utilize stored photosynthetic energy
Consumers
Which recycle components back into environments
Decomposers
Members of communities can be grouped into functional groups called
Guilds
Whats another definition for guilds
Groups of organisms that carry out similar processes but need not be genetically similar
Individual vs Population vs Community
Me, Me and People who look like me, me and ppl who look like me and other ppl too (a guild basically)
What is a niche
Specific functional role of an organism within an ecosystem
What is the success of microbes in particular niches based on?
Their ability to obtain different nutrients to produce energy and biomass.
