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What serves as an electron acceptor during photosynthesis?
During photosynthesis, the electron acceptor is typically NADP+ (nicotinamide adenine dinucleotide phosphate). NADP+ accepts electrons and protons to form NADPH, which carries the high-energy electrons produced during the light reactions of photosynthesis to the Calvin cycle for the synthesis of carbohydrates.
How does NADPH get into the low form of chemical energy?
NADPH, which is reduced, is in a high form of free energy. Its low from of free energy is NADP+, which is oxidized. NADPH reaches its high state of free energy through the light reaction phase of photosynthesis. After photosystem 1 (PSI) Fd, which is an electron acceptor, reduces NADP+ turing it into NADPH by adding one proton (H+) and two electrons on to it. It is a more versatile energy source during the Calvin Cycle, the second stage of photosynthesis, than water because it has higher free energy and its energy is more accessible.
What compound is NADH converted to when it transfers high energy electrons to the first electron carrier?
NADH is converted to NAD+ when it transfers high-energy electrons to the first electron carrier of the electron transport chain.
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.
What is the fate of electrons in noncyclic photophosphorylation?
The electrons released by P700 of PS-I in the presence of light are taken up by the primary acceptor and are then passed on to ferredoxin (Fd), plastoquinone (PQ), cytochrome complex, plastocyanin (PC) and finally back to P700 i.e., electrons come back to the same molecule after cyclic movement.
What molecule is produced when two electrons and one proton are added to NA PD?
NADPH
When NADPH gives up its electrons?
NADPH becomes oxidized to NADP+, losing the electrons it carried. The electrons are typically used in cellular processes, such as in photosynthesis or cellular respiration, and NADP+ can then pick up more electrons to become NADPH again.
What does NADPH add to the Calvin-Benson cycl?
NADPH adds electrons to the Calvin-Benson cycle.
What does nadph carry?
NADPH carries high-energy electrons used in anabolic reactions, such as biosynthesis and the reduction of compounds. It is an important cofactor in metabolic pathways like photosynthesis and fatty acid synthesis, providing reducing power for these processes.
The electrons that are passed to NADPH during noncyclic photophosphorylation were obtained from?
The electrons that are passed to NADPH during noncyclic photophosphorylation were obtained from water. The ultimate electron and hydrogen acceptor in the noncyclic pathway is NADPH+.
What is the source of the electrons that reduce 13-bisphosphoglyceric acid?
NADPH
What is needed to convert pga into g3p in the second step of the Calvin -benson cycle?
Energy from ATP and electrons from NADPH... gotta love novanet right?
Where do the high-energy electrons carried by NADPH come from?
Photosystem 1
What is the source of the electrons that reduce 1 3-bisphosphoglyceric acid?
NADPH
Which sequence accurately describes the flow of electrons in photosynthesis?
In photosynthesis, electrons flow from water to photosystem II, then to photosystem I, and finally to NADP+ to produce NADPH. This flow of electrons is facilitated by the electron transport chain within the thylakoid membrane of the chloroplast.
How does NADP convert into NADPH?
NADP converts into NADPH through a process called reduction, where it gains electrons and a hydrogen ion to become NADPH. This conversion is essential for carrying out various cellular processes, such as photosynthesis.
What is the electron carrier in photosynthesis that will donate electrons to co2 so it can be fixed into sugar is?
The electron carrier in photosynthesis that donates electrons to CO2 for its conversion into sugar is NADPH (nicotinamide adenine dinucleotide phosphate). NADPH is produced during the light-dependent reactions of photosynthesis and transfers high-energy electrons to the Calvin cycle to facilitate the fixation of CO2 into sugar molecules.
