Physiological Ecology Flashcards
physiologically optimal range of conditions
Fundamental niche
area where competitor is absent
Realized Niche
describes an environment that lack oxygen
Anaerobic
using a substance other than O2 as the final electron acceptor of the electron transport chain
Anaerobic Respiration
producing ATP via substrate-level phosphorylation only, without any net oxidation of organic molecules
Fermentation
organisms that are able to produce all or most of their own organic molecules from inorganic sources
Autotrophs
use light as a source of energy for the synthesis of organic molecules from CO2 and H2O or H2S
Photoautotrophs
use energy obtained by chemical modifications of inorganic compounds to synthesize organic compounds
Chemoautotrophs
organisms that require at least one organic compound from their environment
Heterotrophs
use light energy to generate ATP, but they must take in organic compounds from their environment as a source of carbon
Photoheterotrophs
must obtain organic molecules both for energy and as a carbon source
Chemoheterotrophs
require O2 to survive
Obligate Aerobes
poisoned by O2
Obligate Anaerobes
do not use O2, but they are not poisoned by it either
Aerotolerant Anaerobes
use O2 via aerobic respiration, obtain energy via anaerobic fermentation or use inorganic chemical reactions to obtain energy
Facultative Anaerobes
