During photosynthesis carbon dioxide oxidized | …

b)What is the function of these pigments? To harvest light energyand funnel it to the reaction center (the "special" chlorophyll molecules)c) What advantage is it to phototrophs in the environment to have evolvedmany different kinds and colors of pigments? It allows them to competefor different portions of the visible light spectrum, because the differentpigments absorb different wavelengths of light20)--Fill in the blanks:In anoxygenic photosynthesis, LIGHT excites a specialpair of electrons found in A SPECIAL CHLOROPHYLL MOLECULE toa lower reduction potential.

During photosynthesis carbon dioxide oxidized

The S(4) state is the fully oxidized state capable of extracting electrons from water molecules.

Global Redox Carbon Cycle and Photosynthesis …

Plant photosynthesis, both the Light Phase and Dark phasereactions, takes place in chloroplasts, which may be regarded asthe "power plants" of the green leaf cells. At night,when there is no sunlight energy, ATP continues to be generatedfor the plant's needs by respiration, i.e., oxidation of(photosynthetically produced) carbohydrate in mitochondria(similar to animals).

During photosynthesis carbon ..

The 2 pyruvate molecules arereduced by the 2 NADH produced in stage II to a variety of different endproducts, thus regenerating the 2 NAD+ needed to continue the oxidationreactions of stage II.


Likewise, oxygen produced during photosynthesis ..

The oxidative chemical reactions of respiration releaseenergy, some of which is heat and some of it is captured in theform of high energy compunds such as Adenosine triphosphate (ATP)and Nicotinamide adenide dinucleotide phosphate (NADPH). Thesecompounds have a high energy (unstable) terminal phosphate bondand that terminal phosphate is easily detached with the transferof the energy to drive chemical reactions in the synthesis ofother biomolecules. In this case, the ATP loses one phosphate tobecome the energy-depleted ADP (Adenosine diphosphate)and the NADPH loses one electron to become energy-depleted NADP+.

Chemistry for Biologists: Photosynthesis

In a broad chemical sense, the opposite of photosynthesis isrespiration. Most of life on this planet (all except in the deepsea vents) depends on the reciprocal photosynthesis-drivenproduction of carbon containing compounds by a series of reducing(adding electrons) chemical reactions carried out by plants andthen the opposite process of oxidative (removing electrons)chemical reactions by animals (and plants, which are capable ofboth photosynthesis and respiration) in which these carboncompounds are broken down to carbon dioxide and water.

carbohydrates and lipids during photosynthesis and make it ..

Photosynthesis converts these energy- depleted compounds (ADPand NADP+) back to the high energy forms (ATP and NADPH) and theenergy thus produced in this chemical form is utilized to drivethe chemical reactions necessary for synthesis of sugars andother carbon containing compounds (e.g., proteins, fats). Theproduction of high energy ATP and NADPH in plants occurs in whatis known as Light Phase Reactions (Z Scheme) (requiressunlight). The energy releasing reactions which converts themback to energy-depleted ADP and NADP is known as Dark PhaseReactions (Calvin Cycle) (does not require light) in whichthe synthesis of glucose and other carbohydrates occurs.

Metabolic Oxidation and Reduction ..

It catalyzes the net reaction: PC(Cu+) + ferredoxinox PC(Cu2+) + ferredoxinred Again, the membrane protein complex promotes a charge separation transferring an electron from the lumenal to the stromal side of the thylakoid membrane.

During photosynthesis, carbon dioxide is reduced

The cytoplasm is in both types of cells Both also have a nucleus Now Plant Cells have both mitochondrion AND Chloroplast The chloroplast does all the photosynthesis for the plant The Carbon Atom will be taking the journey through Photosynthesis first,
since CarbonDioxide is a reactant (or first element) of the entire cycle.