Figure 18-47 The purple sulfur bacterium Rhodopseudomonas viridis performs light-driven ATP synthesis
The bacteriochlorophylls, bacteriopheophytins, and quinone are
held rigidly in a fixed orientation relative to each other by the
proteins of the reaction center. The photochemical reactions
among these components therefore take place in a virtually solid
state, accounting for the high efficiency and rapidity of the
reactions; nothing is left to chance collision or dependent upon
Lehninger-Nelson-Cox: Principles of Biochemistry, 589.o.
homeostasis : The maintenance of a dynamic steady state by regulatory mechanisms that compensate for changes in external circumstances. ___...
A dalai láma felhívása a világhoz. Az etika fontosabb a vallásnál Ez nagy mondás. A láma urat is meg kell hívnunk a rendünkbe !
"Some proteins endow cells and organisms with the ability to contract, to change shape, or to move about. Actin and myosin function...
We begin in each case by considering the covalent structure of the simple subunits (amino acids, fatty acids, monosaccharides, and nucleoti...