Lecture 29: microbes & energy flow Flashcards
most organisms cannot be or have not been
isolated in pure cultures
identification of organisms can now be done using
genetic ‘fingerprints’
the uncultured microbial world is
far greater than the cultured world
individual microbial cells of a species proliferate to form a
population
populations interact/communicate to form
communities
microbial ecology is
the study of the interrelationship among microorganisms and their environment
microbiome is
all microorganisms, and their genes, within a particular environment
enrichment cultures provide
specific temperature and chemical conditions that encourage growth of specific groups of microbes
enrichment cultures are examples of
mesocosms
mesocosms are
an experimental system that stimulates real-life conditions as closely as possible
metabolism can be broken in to two aspects
- catabolism
- anabolism
harvesting building blocks can release
energy
reduction-oxidation in bacteria:
H2S is
oxidised to S
reduction-oxidation in bacteria:
following H2S oxidisation NADP+ is
reduced to NADPH2
reduction-oxidation in bacteria:
following NADP+ reduction NADPH2 is
oxidised to NADP+