42)The FeS electron acceptor proteins of the green bacteria and the heliobacteria have a much more electronegative E0' than NADH.
43)Photosystem II absorbs shorter wavelengths of light, whereas photosystem I absorbs the longer wavelengths.
44)Photosystem I is responsible for splitting a water molecule in the first step of oxygenic electron flow.
45)RubisCO converts ribulose bisphosphate and CO2 into two molecules of 3-phosphoglyceric acid (PGA).
46)Organisms grown with CO2 as its sole carbon source must have energy in the form of ATP as well as reducing power.
47)Electron donors for chemolithotrophs may be geological, biological, or anthropogenic.
48)H2-oxidizing bacteria are all aerobic.
49)Some hydrogen bacteria have a soluble (cytoplasmic) as well as a membrane-integrated hydrogenase that each serves different functions.
50)Because H2 levels in oxic environments are transient, it is likely that aerobic hydrogen bacteria shift between chemoorganotrophy and chemolithotrophy depending on levels of organic compounds and hydrogen in their habitats.
51)Most iron-oxidizing bacteria are obligate acidophiles.