Chapter 5 cont. Flashcards
Phototrophy is
the conversion of radiant energy from the sun into ATP and NADPH
Autotrophy involves_______ fixation which is the conversion of _______ ______ into _____ molecules
carbon
inorganic carbon
organic
Chemolithotrophy is
the use of inorganic materials as a source of energy and electrons
3 types of phototrophy are
- oxygenic phototrophy
- anoxygenic phototrophy
- rhodopsin based phototrophy
- all different by types of pigment and their end by-products
oxygenic phototrophy
- green plants use
- release O2 as by product
Anoxygenic phototrophy have
no chlorophyll only bacteriochlorophyll-used by bacteria
Rhodopson based phototrophy
uses rhodopsin that has a purple pigment
Photoautotrophy involves
light rxns- energy step aka - light dependent rxn
dark rxns- carbon fixing step aka-light independent rxn
- immediately converts to energy for use
Photophosphorylation aka _____, provides ____ and reducing power(___) to power the ____ Cycle(__)
- light rxn
- ATP
- NADPH
- Calvin-Benson
- dark rxn
Thylakoid is
the in-folding of the cell membrane
Non-cyclic photophosphorylation produces
ATP
NADPH
O2
Cyclic phosphorylation produces
ATP
What does non-cyclic phos need for dark rxn?
- energy-ATP
- reducing power- NADPH
- these operate simultaneously
Photolysis is
when heat causes water to split and put back electron molecule of water
Water provides source of electrons in ____ reaction
oxygenic reaction
The synthesis of ATP in the non-cyclic photophos rxns are the same as _____.The electrons do not end up on the ____.They either get recycled back or used for ____.
- chemiosmosis
- by-product
- reduction
photo = \_\_\_ litho = \_\_\_ autotroph =\_\_\_ photo = \_\_\_organo=\_\_\_\_heterotroph = \_\_\_\_
sun - source of electrons-rock eating - fix carbon
source of energy - SOE- carbon - feeders on others
Archaea have no _____.based photosystems. They utilize a membrane ___ called ____ to capture ____energy.
chlorophyll
protein
bacterioorhodopsin
radiant
In oxygen poor environments archaea use _____ that function as a _____driven ____pump.
pigments
light
proton
Archaea are ____ trophs
photo
Chemolithotrophs use ________ as _____ donors and ____ source.
inorganic compounds
electron
energy
Some common electron donors for chemolithotrophs are
H, reduced N, S or Fe
Photolithotrophs require additional energy from the ____
sun
In the dark rxn or ________ , ____ and ____ are used to fix carbon. This is an _____ system and pathway. The pick up molecule is ____. The starting material is continuously ____
Calvin-Benson Cycle ATP NADPH anabolic RuBP regenerated
Iron oxidizing bacteria have a low ___ yield so they consume ____ quantities of _____ molecules. This has a significant ecological impact.
energy
high
inorganic
Iron bacteria oxidize ___ iron (Fe2+) into ___ iron(Fe3+)
ferrous
ferric
Sulfur oxidizing bacteria oxidize
sulfides, sulfur, thiosulfate to sulfuric acid(H2SO4)
Many chemolithotrophs are _____ using CO2 as ____ source. This gives zero ____ power
autotrophic
carbon
reducing
Nitrifying bacteria oxidize ____ to _____
amonia(NH3)
nitrate(NO3)
Hydrogen bacteria oxidize ____ to ____
hydrogen gas(H2) water(H2O)
Reverse ____ flow is necessary for _____ to generate ____ power.The ___ yield decreases
electron
chemolithoautotrophs
ATP
Chemolithoautotrophy is very _____ because most of the ____ is expended on generating _____ power rather than on ___. Many will grow as ____ if supplied with enough ____ sources. Many can grow either ____ or ____ by varying the final ____ acceptor.
inefficient energy reducing ATP heterotrophs carbon aerobically anaerobically electron
