Reading...
Play button
Play button
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;
25 Cards in this Set
- Front
- Back
|
Major elements
|
CHONS
|
|
|
Minor elements
|
CA, Na, Cl, Fe, MG, Mn
think 'ca-na-cl' |
|
|
autotrophs
|
use inroganic sources of carbon , turn inorganic carbon sources into organic carbon sources
|
|
|
heterotrops
|
require organic sources of carbon * these come from other organisms, they cannot make their own
|
|
|
phototrophs
|
use light for energy
|
|
|
chemotrophs
|
use chemicals as a source of energy, they oxidize chemicals and energy is released
|
|
|
lithotrophs
|
use REDUCED organic molecules as source of energy
|
|
|
organotrophs
|
use Organic molecules
|
|
|
3 Sources of nitrogen
|
1) atmsospheric nitrogen fixers like bacteria and cyanobacteria
|
|
|
3 Sources of nitrogen
|
2) Inorganic nitrogen NO2- (nitrate)a few chemolithotrophic bacteria can use strictly sources of nitrogen
|
|
|
3 source of nitrogen
|
Organic Reduced nitrogen= NH4+ or amino acids are the building blocks of proteins, humans need 8 essential amino acids that they can't make
|
|
|
NH4+
NO2- N2 |
ammonium
nitrate nitrogen |
|
|
water
|
needed for most biological chemical reactions
|
|
|
low ph
|
mold grow well on low pH, bacteria cannot
|
|
|
fastidious organisms
|
needs MANY organic + inorganic molecules to survive, they cannot make their own a.a., this is most pathogens
|
|
|
General purpose media
|
TSA, TSB, tryptic soy agar,
|
|
|
enriched media
|
ex. Blood agar.
when you add additional nutrients to gen. purp. media like proteins, agar, a.a., sugars, |
|
|
synthetic media
|
the exact conc. of each chemical is known, designed to grow ONE particular MO
|
|
|
selective media
|
favor the growth of particular types of MO and limit the growth of other MO. Special ingredients are added that are unfavorable to some MO
|
|
|
Differential media
|
contain ingredients which allow the observer to distinguish between different types of MO growing on the media. ex. Endo agar-test for fecal coliform
|
|
|
assay medium
|
used to determine specific nutrient requirements on an organism used to determine M sensitvity to spceific antibiotics
|
|
|
enumeration media
|
used to determine # of MO in a sample, commonly used in soil, food, h20 samples
|
|
|
characterization media
|
used to determine type of growth or porduction of SPECIFIC CHEMICALS by a MO
|
|
|
living media
|
consist of living cells, needed to cultivate viruses
|
|
|
Maintenance media
|
keeps culture alive for a long time, does not promote growth
|
