Explain the role of REDOX reactions in cellular respiration?

The redox reactions can occur in many modes as shown in the table below:

What are the role of redox reactions in photosynthesis …

Active oxygen molecules, or free radicals, are produced in the water and the fish’ body. They are extremely reactive and can also attach themselves to normal, healthy cells and damage them genetically.
These active oxygen radicals steal electrons from normal, healthy biological molecules.
This electron theft by active oxygen oxidizes tissue and can cause disease; these are proven facts!

Figure 11-03h shows a typical redox reaction in the form of cellular respiration via hydrogen exchange.

Explain the role of redox reactions in photosynthesis …

Simultaneously all three of these processes proceed to self-purify natural water on the basis of the chemical reactions of oxidation and reduction.
Living organisms such as fish are adapted to NOT "perfectly clean water", but to ecologically clean water with definite content of organic and inorganic compounds, micro-admixtures, Magnetized ions, and even bacteria or saprophytes (saprophytes are an organism that grows on and derives its metabolic energy from dead or decaying organic matter; such as most fungi).
The range of mentioned components of ecologically clean water is the integral result of oxidation and reduction self-purification of water.

Cellular respiration is the process by which the chemical This change is accompanied.ADP's role is to provide a source for making ATP.

Overall, it is the reverse reaction of photosynthesis, but chemically, the steps involved are very different.)

In general terms, explain the role of redox reactions in photosynthesis

Redox reaction - Biology-Online Dictionary

Effect on plants:
In a controlled test conducted with terrestrial plants; plants treated with magnetized water (basically Redox Balanced Water) reacted in a test, with a growth in the order of 20% to 40% bigger than the plants treated with regular water.
While no test has been conducted with planted aquariums, it is not rocket science to draw conclusions from this study and apply this to a planted freshwater aquarium and the effect of Redox Balance on plant growth!

Cellular Respiration - wonderwhizkids

Superoxide and other ROS are produced in the mitochondria during oxidative phosphorylation as a normal byproduct of aerobic respiration in fish (and other animals).
Superoxide is formed by the 1-electron reduction of molecular oxygen, resulting in a free radical. However ROS are not intrinsically destructive; on the contrary, increasing evidence shows that they play necessary roles in normal signal transduction.
In low concentrations, they are implicated as second messengers primarily through inhibition of phosphatases, acting downstream of effectors such as platelet-derived growth factor, epidermal growth factor, tumor necrosis factor agonists, and interleukin.
In higher concentrations, however, they take on pathophysiological roles. ROS affect the oxidative modification of diverse molecules, including DNA, proteins, lipids, and sugars, potentially leading to toxicity.

Explain the role of REDOX reactions in photosynthesis.

Free radical chemistry is the underpinning of 2 broad classes of signaling molecules in biological systems: ROS, which are reactive intermediates of oxygen metabolism, and a closely related group of RNS.
The forms of ROS that are relevant in biological systems include the superoxide radical (O2•–), hydrogen peroxide (H2O2), and hydroxyl radical (OH•).
RNS of biological importance include NO, low- and high-molecular-weight S-nitrosothiols, and peroxynitrite (ONOO–).

What is the role of redox reaction in human lives? - …

In biological systems, the Redox Potential must be kept reduced to perpetuate the life process. In other words, the concentration of DHA (an oxidized form of ascorbic acid), must be kept to a minimum.
During injuries or stress which expose body tissues to atmospheric oxygen or disease, several reactions are triggered in polyunsaturated fatty acids (PUFAs) present in cellular membranes which produce hormones called prostaglandins that repair damage.
Under oxidizing stress (injury or disease) or impaired ability to manufacture NADH (aging or disease), the concentration of DHA can rise as the redox potential slips. This is a potentially life-threatening state for fish or any other animal.