ch 6- reproduction Flashcards
reproduction is what only for prokaryotes
asexual- binary fission
how do we get genetic variation if identical daughter cells are produced
mutations
what are the 3 sources of genetic recombination
conjugation , transformation and transduction
what is conjugation
2 bacteria joined by sex pilus followed by plasmid transfer
what is transduction
bacterial dna brought in by virus
what is transformation
uptake of bacterial dna from environment
All living things must acquire_ for ATP production, and must obtain _ for building organic
molecules.
Energy and carbon
3 sources of energy for ATP production
phototroph = ight
chemoorganotroph = organic molecules like sugar
chemolithotroph = inorganic molecules like ammonia (NH3) or methane (CH4
sources of carbon for synthesis of organic compound
autotroph ( use carbon to make their own organic molecules ) and heterotroph (use ready-to-use organic molecules in the environment)
Eukaryotes use only 2 of 6 possible methods of making ATP and obtaining carbon.
Prokaryotes do them all
Producing ATP through Cellular Respiration:
some prokaryotes use sugars as e- donor and oxygen as final e- acceptor
Producing ATP via Fermentation
Some eukaryotes can ferment glucose
Prokaryotes can ferment a great variety of molecules
Producing ATP via Photosynthesis:
Absorbed light E excites electrons that drive ATP synthesis by chemiosmosis.
Can be oxygenic or anoxygenic
Nitrogen is an often _
limiting resource in the enviornment
Nitrogen is required to make
proteins and nucleotides,
