Excited chlorophyll Electron Proton gradient formed for ATP carrier synthesis Excited NADP chlorophyll Electron e reductase carrier (NADPH NADP+ Reaction- center Proton pump Electron chlorophyll carrier Reaction- Radiant center chlorophyll energy Water-splitting Radiant enzyme 2 (H20 energy 4 H+ + 0, Photosystem I Proton pump Photosystem I NADP reductase O FIGURE 6.26 The Tandem Photosystems of Cyanobacteria and Chloroplasts Radiant energy captured by antennae pigments excites a reaction-center chlorophyll, causing it to emit a high-energy electron, which is then passed to an electron transport chain. In cyclic photophosphorylation, electrons emitted by photosystem I are returned to that photosystem; the path of the electrons is shown in green arrows. In non-cyclic photophosphorylation, the electrons used to replenish photosystem I are donated by radiant energy-excited photosystem Il; the path of these electrons is shown in orange arrows. In turn, photosystem Il replenishes its own electrons by stripping them from water, producing O2. Energy of electrons

Q: Describe how guard cells regulate transpiration .

A: This is the process of transpiration. Cooling the plant and pumping water and minerals to the leaves…

Q: What is the benefit of Photorespiration in plants and what problem does it pose in many plants?

A: The photorespiration is the process of plant metabolism in which the enzyme Ribulose- 1,…

Q: Why does Photosytem II comes first before Photosystem I?

A: Photosystems are structural and functional elements of protein complexes involved in an important…

Q: How does darker color affect dissolved oxygen through the process of photosynthesis?

A: Dissolved oxygen is the free oxygen present in the water or other liquids, it helps in accessing…

Q: How does photorespiration counter photosynthesis?

A: Photorespiration is defined as the process by which, in higher plants, Ribulose Bisphosphate is…

Q: Describe how a C4 plant minimizes photorespiration.

A: Plants are the autotrophic organisms. They can perform photosynthesis to fix the inorganic carbon…

Q: Which pigments provide the maximum efficiency for a plant as itconducts photosynthesis?

A: Autotrophs are organisms which can synthesise their own food via photosynthesis. For example:…

Q: What would be the effect on plants if photorespiration did not exist?

A: Photorespiration is a process taking place in plants in which some of the energy produced by the…

Q: Where do the light-dependent reactions take place?

A: Photosynthesis is the process by which green plant make their own food in the presence of light.

Q: What are the various sources of protons that contribute to the generation of a proton gradient in…

A: The electron transport chain helps in the production of a proton gradient which is helpful in ATP…

Q: What is the process when plants taking in carbon dioxide

A: Plants take in carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis.…

Q: What is the purpose of the non-cyclic photophosphorylation? To generate NADPH for the…

A: The photophosphorylation that occurs in the grana of thylakoids in a non cyclic manner in which both…

Q: How does photosystem I reduce NADP+ ?

A: The photosystem is the arrangement of pigments including chlorophyll within thylakoids. There are…

Q: does the process of photorespiration waste atp

A: Photorespiration is defined as a respiratory process in higher plants by which they will consume…

Q: what is Photosinthesis??

A: Photosynthesis is a process by which green plants and certain other organisms and convert light…

Q: What are the fates of the products of the light dependent reaction of photosynthesis?

A: Photosynthesis is the process of occurs in plants that converts light energy into chemical energy.…

Q: Explain how redox balance is maintained during the light reactions

A: Photosynthesis is a biochemical process by which plants and certain bacteria, and lower organisms…

Q: what Are photosystems enzymes?

A: Photosynthesis is a complex process by which carbon dioxide and water are converted into…

Q: What is ADP phosphorylation? What respectively are photophosphorylation and oxidative…

A: Introduction - The addition of phosphate to an organic substance is known as phosphorylation.…

Q: How Does Photorespiration Limit CO2 Fixation?

A: Photorespiration is a process that occurs in plants. In this, plants release carbon dioxide and…

Q: What are the light-dependent changes in the stroma that regulate the Calvin cycle?

A: The Calvin cycle is the chemical response that converts carbon dioxide and different mixtures into…

Q: How is the photic energy absorbed by chlorophyll transfered to ATP molecules in…

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Q: Which photosystem is used during the light process?

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Q: What is C2 cycle of photorespiration?

A: The plant, which is a multicellular eukaryotic organism, performs photosynthesis. Plants, which…

Q: How can a proton gradient be created in cyclic photophosphorylation in photosystem I ?

A: In the plant cells, photosystem I is considered an integral membrane protein complex to utilize the…

Q: Which color light waves best at carrying out photosynthesis?

A: Photosynthesis works by receiving light and converting its energy into sugars that the plant can…

Q: How is the photic energy absorbed by chlorophyll transfered to ATP molecules in…

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Q: What is the advantage to plants to have the option of both cyclic and noncyclic pathways for…

A: Photophosphorylation is the process of utilizing light energy from photosynthesis to convert ADP to…

Q: What are the inputs to the Light Reactions?

A: Photosynthesis:It can be defined as the process with which the green plants and some other organisms…