Hydrogen fuel cells power the shuttle's electrical systems, producing a clean byproduct-pure water, which the crew drinks. A fuel cell combines hydrogen and oxygen to produce electricity, heat, and water. Fuel cells are often compared to batteries. Both convert the energy produced by a chemical reaction into usable electric power. However, the fuel cell will produce electricity as long as fuel (hydrogen) is supplied, never losing its charge.
Chlorophyll b is a form of chlorophyll. Chlorophyll b helps in photosynthesis by absorbing light energy. It is more soluble than chlorophyll a in polar solvents because of its carbonyl group. Its color is yellow, and it primarily absorbs blue light.n land plants, the light-harvesting antennae around photosystem II contain the majority of chlorophyll b. Hence, in shade-adapted chloroplasts, which have an increased ratio of photosystem II to photosystem I, there is a lower ratio of chlorophyll a to chlorophyll b.
Description. Chlorophyll is the major light-absorbing pigment in green plants. It is located within the membrane of the chloroplasts, which are small, green organelles found in plant cells. Chlorophyll is a large molecule composed of hydrogen, carbon, oxygen, and magnesium coordinated with four central nitrogen atoms.r. Fisher has been using chlorophyll in the treatment of anemia with good results. In another clinical study, Dr. Putek used 15 adult patients with chronic hypochromic anemia. They were given chlorophyll and allied substances and placed on diets free from meat and eggs, but adequate in other respects.