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Can oxygen be reduced?
Yes, oxygen can be reduced through a chemical reaction where it gains electrons. This reduction process often occurs during combustion or respiration, where oxygen molecules combine with electrons to form water or carbon dioxide.
Why NAD plus can be used to shuttle electrons?
NAD+ can shuttle electrons because it can accept electrons to become reduced to NADH, which can then donate those electrons to other molecules in the cell. This ability to cycle between oxidized (NAD+) and reduced (NADH) forms allows NAD+ to act as a carrier of high-energy electrons during processes like cellular respiration.
Where do electrons get their energy in photosystem I?
In photosystem I, electrons get their energy from the absorption of light by chlorophyll molecules. When light is absorbed, it excites the electrons in the chlorophyll, allowing them to move through a series of electron carriers in the photosystem to generate energy for the production of ATP and NADPH during photosynthesis.
Does a oxidized agent increase its oxidation number?
Yes, an oxidizing agent increases its oxidation number as it gains electrons during a redox reaction. This means it gets reduced by accepting electrons from the reducing agent.
Describe what occurs during the citric acid cycle?
During the citric acid cycle, also known as the Krebs cycle, acetyl-CoA is oxidized to generate energy in the form of ATP, NADH, and FADH2. This cycle takes place in the mitochondria and involves a series of enzyme-catalyzed reactions that produce carbon dioxide as a byproduct. The citric acid cycle is a key step in cellular respiration, providing electrons that will be used in the electron transport chain to generate more ATP.
The electrons that are transferred during cellular respiration are carried in what molecules?
There are two electron carriers produced in the citric acid (Krebs Cycle). The first is NAD+ or NADH in its reduced form. The other is FAD+ which becomes FADH2 after being reduced. One turn of the citric acid cycle produces 1 and 3 molecules of FADH2 and NADH respectively. Source: another Wiki Answer
In a cycle of chemical reactions that break down glucose and produce ATP energizes electron carriers that pass the energized electrons on the electrons transport train?
The cycle you are referring to is called cellular respiration. During this process, glucose is broken down in a series of reactions to produce ATP. Along the way, energized electrons are transferred to electron carriers like NADH and FADH2. These energized electrons are then passed along the electron transport chain to generate ATP through oxidative phosphorylation.
The function of hydrogen carriers such as nicotinamide adenine dinucleotide is to?
The function of Nicotinamide adenine dinocleotide (NAD) is to carry electrons from one reaction to another. It also accepts electrons from other molecules and becomes reduced, and it adds or removes chemical groups from proteins.
During cellular respiration, how is the substrate both oxidized and reduced?
During cellular respiration, the substrate is oxidized by losing electrons and reduced by gaining electrons in a series of redox reactions.
What is the origin of the H plus and electrons that are transferred to NAD plus?
The origin of H+ and electrons transferred to NAD+ during cellular respiration is from the breakdown of glucose in the process of glycolysis and the citric acid cycle. These processes generate high-energy electrons that are carried by electron carriers like NADH to the electron transport chain, where they are used to create a proton gradient for ATP production.
What are the functions of NAD and FAD?
To oxidize the intermediate products of glycolysis and the citric acid cycle and then, in reduced state, take their electrons and hydrogens to the systems of the electron transport chain where ATP production is the ultimate result.NAD + --> NADHFAD + --> FADH2
What transfers energy from glucose to other molecules during redox reactions in?
Electrons transfer energy from glucose to other molecules during redox reactions in cells.
True or false During photosynthesis when electrons are transferred from one molecule to another they are usually carried by hydrogen ions and NADP plus?
False. During photosynthesis, electrons are typically carried by molecules such as chlorophyll and other electron carriers like NADPH, which is a reduced form of NADP+. Hydrogen ions do play a role in some reactions during photosynthesis, but they are not primarily responsible for transferring electrons between molecules.
Are NAD and FAD oxidized or reduced during Krebs?
NAD and FAD are reduced in the Krebs cycle and oxidised in the electron transport chain.
What picks up energized electrons from reactions in the thylakoids of plants during photosynthesis?
The molecule that picks up energized electrons in the thylakoid membranes during photosynthesis is called NADP+ (nicotinamide adenine dinucleotide phosphate). It accepts the electrons and is reduced to NADPH, which then carries the electrons to the Calvin cycle for the production of sugars.
What transfer energy from glucose to other molecules during redox the reactions in cells?
Nicotinamide adenine dinucleotide (NAD+) and flavin adenine dinucleotide (FAD) are the molecules that transfer energy from glucose to other molecules during redox reactions in cells. They serve as electron carriers, shuttling electrons between different molecules to facilitate ATP production through processes like glycolysis and the citric acid cycle.
Why are Electron carriers important in photosynthesis?
Electron carriers, such as NADP+ and ferredoxin, play a crucial role in photosynthesis by shuttling high-energy electrons during the light-dependent reactions. These carriers help to transfer electrons from water to generate ATP and NADPH, which are essential for the Calvin cycle to produce sugars. Overall, electron carriers facilitate the conversion of light energy into chemical energy that is used to drive the synthesis of organic molecules in plants.
