How does water's role in photosynthesis explain

1 answer:

4 0

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.

You might be interested in

Why does everyone answer easy questions but never the hard ones?

stiv31 [10]

Answer:

Well its simpler.

Explanation:

I always try to answer all the questions I know but im not a professional.

3 0

3 years ago

What was the effect of diversity in Darfur

lilavasa [31]

Genocide. Diversity in Darfur resulted in a major armed conflict in the Darfur region of Sudan, beginning in February 2003 when the Sudan Liberation Movement and Justice and Equality Movement rebel groups began fighting the Sudanese government, which they accused of oppressing Darfur's non-Arab population. The government responded to attacks by carrying out ethnic cleansing against Darfur's non-Arabs, resulting in the deaths of hundreds of thousands of civilians and the indictment of Sudan's president Omar al-Bashir for genocide, war crimes, and crimes against humanity by the International Criminal Court.

3 0

3 years ago

if student protesters had not chosen nonviolent protest what other peaceful what other peaceful options might they have used

sammy [17]

Students could make posters and signs. Plus students could write letters to the president to end segregation.

3 0

3 years ago

Regional Development ensures sense of ownership at every development work with maximum involbement of the lovals.Elaborate

pav-90 [236]

The term “sense of ownership” is frequently cited as a significant characteristic of community development. While there is increasing use of the terms ownership or sense of ownership, there is a paucity of research regarding what these terms mean, how this body of knowledge influences community development, and the various approaches that can be applied in contemporary community research and practice. A sense of ownership in community development is described as a concept through which to assess whose voice is heard, who has influence over decisions, and who is affected by the process and outcome. Applying the concept of ownership can determine how the strategic interests and actions of individuals or organizations contribute to community development efforts. In addition, the potential for ownership can be understood in part by examining the capacity for and quality of trust. Implications are discussed regarding how the concept of ownership advances the current field, specifically regarding community development research and practice.

6 0

3 years ago

When Rosalina listens to her friend discussing the difficulty she is having with her boyfriend, she does not tell her what to do

Juliette [100K]

Answer: Empathy

Explanation:

Empathy is defined as the capacity of an individual to understand and feel the emotions and feeling of other individuals.The person tends to place their own-self in the situation of other person to experience about the actual feeling of that person.

According to the situation mentioned in the question, Rosalina is using empathy method to understand the difficult state and feelings of her friend with her boyfriend through putting herself in her friend's place.In this way Rosalina can completely get to know about the issue.

6 0

3 years ago