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Unformatted text preview: osmosis
metabolic pathway - a step-wise series of chemical reactions, where each reaction is facilitated by a different enzyme.
biosynthesis - the use of metabolic pathways to rearrange atoms in molecules available to the cell into biologically useful molecules.
nitrogen fixation - the process where molecular nitrogen (N2) is reduced to form ammonia (NH3).
autotroph - a cell able to reduce carbon dioxide to a three-carbon sugar (glyceraldehyde).
- a cell
heterotroph theft. unable to reduce carbon dioxide to a three-carbon sugar, thus, must get their needed supply of simple sugars from autotrophic cells via barter or
essential nutrient - any nutrient that must be included in an organism's diet if normal function is to continue.
allosteric modulation - whenever a protein's function is controlled by ligand-induced shape changes.
- how cells
energy metabolism NADPH. use an external usable energy source, such as light or a high energy molecule, to make the two needed cellular fuels - ATP and
higher redox potential - a molecule that in comparison to another molecule does not hold onto certain electrons as tightly, so more readily donates electrons than accepts electrons....
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- Fall '14