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.
Answer:
The answer is: an ethnography.
Explanation:
Ethnography is a research method that consists of the study of the everyday life of a group of people. When social researchers first began using this method, it was common for them to live with the group they were studying over a period of years, since they focused on the study of foreign cultures. However, although ehnography still implies the submersion of the researcher into the community or culture he is studying, it doesn't necessarily have to be a foreign non occidental culture.
Within this method, researchers can use several research techniques to gather data, participant and non participant observation, interviews, etc.
The correct answer is; sweating, shortness of breath and his pounding heart.
Further Explanation:
When Ta-Nehisi was walking back and the car slowed down and followed him he then started feeling his nervous system going into overdrive and felt fear. His autonomic aspect to his emotional response was the shortness of breath, sweating and the pounding of his heart.
When someone gets scared they can exhibit physical responses such as the signs listed above. In extreme cases, the person can faint or blackout from the fear.
This system works without the person being conscious of the fact or effort. There are approximately two kinds of this system in the body they are;
- Parasympathetic Nervous System
- Sympathetic Nervous System
Learn more about the nervous system at brainly.com/question/2543243
#LearnwithBrainly
<span>Personality is plastic, but a person's personality will be affected lifelong by the different experiences that an individual had gone through he/she might or might not learn from it bu for sure this has an effect on his/her personality as a whole. Hope this helps.</span>
