At a fundamental level, water provides electrons to replace those removed from chlorophyll in photosystem II. Also, water produces oxygen as well as reduces NADP to NADPH (required in the Calvin cycle) by liberating H+ ions
During the process of photosynthesis, six molecules of carbon dioxide and six molecules of water react in the presence of sunlight to form one glucose molecule and six molecules of oxygen. The role of water is to release oxygen (O) from the water molecule into the atmosphere in the form of oxygen gas (O2).
Water also has another important role of being an electron feeder. In the process of photosynthesis, water provides the electron that binds the hydrogen atom (of a water molecule) to the carbon (of carbon dioxide) to give sugar (glucose).
Water acts as a reducing agent by providing H+ ions that convert NADP to NADPH. Since NADPH is an important reducing agent present in chloroplasts, its production results in a deficit of electrons, resulting from oxidation of chlorophyll. This loss of electron must be fulfilled by electrons from some other reducing agent. Photosystem II involves the first few steps of the Z-scheme (the diagram of the electron transport chain in photosynthesis) and therefore a reducing agent that can donate electrons is required to oxidize chlorophyll, which is provided by water (acting as a source of electrons in green plants and cynobacteria). Hydrogen ions thus released create a chemical potential (chemiosmotic) across the membrane that finally results in synthesis of ATP. Photosystem II is the primary known enzyme that acts as catalyst in this oxidation of water.
Compromise helped to form the U.S constitution bc everyone had to agree on great rules that they would think make our country a free and great place to live
Answer: d) All of these responses are correct.
Explanation: It is considered that society at present time doesn't have strong bureaucracy and profitable environment. Mass scale or mass society is referred as the people in less quantity that persist the values like culture, social institution, not personal nature, small communities etc. in the modern society or era. Therefore , the correct option is option(d).
<span>Women and men differ in their career choices both across and within fields, and psychology is no exception. Although subfield segregation has been reduced over the years, subfield differences persist (see Table 1). For example, in 2002, 82.7% of PhDs in developmental psychology were awarded to women, while only 56.2.% of PhDs in experimental psychology were awarded to women. (We excluded comparative, psychometrics, quantitative, and personality because of the small number of graduates: 7, 13, 8, and 23, respectively.) However, of new PhDs awarded in psychology in 2002, women earned more than 50% across all subfields (again, excluding comparative, psychometrics, quantitative, and personality). Unfortunately, the increasing number and proportions of psychologists who are women have not translated into equal professional participation across various subfields and leadership positions within psychology.</span>
