What is the source of electrons in plants?
Answer and Explanation: In the electron transport process of photosynthesis, water is used as the electron source.
What is the source of electrons for photosystem I?
Photosystem I receives electrons from plastocyanin or cytochrome c6 on the lumenal side of the thylakoid membrane and uses light energy to transfer them across the membrane to ferredoxin on the stromal side. It can also function in a cyclic electron transport pathway.
What is the source of electrons for the chloroplast electron transport chain?
What is the initial source of electrons for the chloroplast electron transport chain? The reaction center contains a pair of chlorophyll a molecules with a special property. Those two chlorophylls can undergo oxidation upon excitation; they can actually give up an electron in a process called a photoact .
What is the source of electrons in cellular respiration?
Comparison chart
| Cellular Respiration | |
|---|---|
| Occurs in which organelle? | Mitochondria Glycolysis (cytoplasm) |
| Final electron receptor | O2 (Oxygen gas) |
| Occurs in which organisms? | Occurs in all living organisms (plants and animals). |
| Electron source | Glucose, NADH + , FADH2 |
What is the source of electrons for the light reactions quizlet?
In light reactions, water is split, providing a source of electrons and giving off O2 as a biproduct. H+ electrons from water reduce NADP+to NADPH.
What is the main source of electrons for photosystem II?
water molecules Photosystem II obtains replacement electrons from water molecules, resulting in their split into hydrogen ions (H+) and oxygen atoms. The oxygen atoms combine to form molecular oxygen (O2), which is released into the atmosphere. The hydrogen ions are released into the lumen.
What are the different electron sources in photosynthesis and respiration?
Comparison chart
| Cellular Respiration | |
|---|---|
| Occurs in which organelle? | Mitochondria Glycolysis (cytoplasm) |
| Final electron receptor | O2 (Oxygen gas) |
| Occurs in which organisms? | Occurs in all living organisms (plants and animals). |
| Electron source | Glucose, NADH + , FADH2 |
Which is the source of electrons in the electron transport chain stage of respiration?
All of the electrons that enter the transport chain come from NADH and FADH 2start subscript, 2, end subscript molecules produced during earlier stages of cellular respiration: glycolysis, pyruvate oxidation, and the citric acid cycle.
What provides the source of electrons to the electron transport chain?
All of the electrons that enter the transport chain come from NADH and FADH 2start subscript, 2, end subscript molecules produced during earlier stages of cellular respiration: glycolysis, pyruvate oxidation, and the citric acid cycle.
How does the electron transport chain work in photosynthesis?
Electron transport helps establish a proton gradient that powers ATP production and also stores energy in the reduced coenzyme NADPH. This energy is used to power the Calvin Cycle to produce sugar and other carbohydrates.
What is the source of energy that provides the boost for electrons during photosynthesis group of answer choices NADPH cellular respiration ATP light?
Key Concepts: • Photosynthesis converts light to the chemical energy of food. The light reactions convert solar energy to the chemical energy of ATP and NADPH. The Calvin cycle uses the chemical energy of ATP and NADPH to reduce CO2 to sugar.
What is the source of H and electrons that end up in glucose?
In order to take the hydrogen it needs to build glucose molecules, the plant uses the energy from the sun to break the water molecule apart, taking electrons and hydrogen from it and releasing the oxygen into the air.
Which of the following is a source of replacement electrons for photosystem II during photosynthesis?
In (a) photosystem II, the electron comes from the splitting of water, which releases oxygen as a waste product.
What is the source of electrons in Photophosphorylation?
Electron transport: chloroplasts vs mitochondria In photosynthesis, water is the source of electrons and their final destination is NADP+ to make NADPH.
What is the source of energy for electron transport in the mitochondria?
During electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix, through ATP synthase, producing ATP.
Where does the electron transport chain take place in photosynthesis?
the thylakoid membrane In photosynthetic eukaryotes, the electron transport chain is found on the thylakoid membrane.
What is the source of electrons in respiration?
In cellular respiration, electrons from glucose move gradually through the electron transport chain towards oxygen, passing to lower and lower energy states and releasing energy at each step. The goal of cellular respiration is to capture this energy in the form of ATP.
What is the initial source of electrons in the electron transport chain in photosynthesis?
What is the initial source of electrons for the chloroplast electron transport chain? Water is the initial source. The reaction center contains a pair of chlorophyll a molecules with a special property.
What source of energy provides a boost for electrons during photosynthesis?
light energy The light energy captured by chlorophyll molecules in the chloroplast provides the boost for the electrons. Photosynthesis converts light energy to chemical energy and stores it in the chemical bonds of sugar molecules, which can provide energy for later use or raw materials for biosynthesis.
Which of the following is the source of electrons for the light reactions?
Light reactions occur when plants synthesize food from carbon dioxide and water, referring specifically to the part of energy production that requires light and water to generate electrons needed for further synthesis. Water provides the electrons by splitting into hydrogen and oxygen atoms.
Where do electrons get their energy in photosystem II?
The heart of photosystem II is the reaction center, where the energy of light is converted into the motion of energized electrons. At the center is a key chlorophyll molecule. When it absorbs light, one of its electrons is promoted to a higher energy.
Where does photosystem 2 get its electrons?
water molecules Photosystem II obtains replacement electrons from water molecules, resulting in their split into hydrogen ions (H+) and oxygen atoms. The oxygen atoms combine to form molecular oxygen (O2), which is released into the atmosphere. The hydrogen ions are released into the lumen.
What is the source of electrons for non cyclic photophosphorylation?
Electrons from Photosystem I are accepted by NADP. ATP molecules are produced. Both NADPH and ATP molecules are produced. Water is not required….Difference between Cyclic and Non-Cyclic Photophosphorylation.
| BIOLOGY Related Links | |
|---|---|
| Genotype Meaning | Shrub Plant |
What is photosynthetic electron transport?
Photosynthetic electron transport describes the process of light-induced electron transport for generating chemical energy and reducing equivalents in phototrophic organisms.
Where do electrons come from in light-dependent reactions?
The light-dependent reactions involve two photosytems (II and I) and an electron transport chain that are all embedded in the thylakoid membrane. Light that is harvested from PSII causes an excited electron of the chlorophyll a special pair to be passed down an electron transport chain (Pq, Cyt, and Pc) to PSI.
Which of the following is a source of electrons for the light reactions quizlet?
Light reactions occur in the thylakoid membranes. They convert light energy to chemical energy and give off O2. In light reactions, water is split, providing a source of electrons and giving off O2 as a biproduct. H+ electrons from water reduce NADP+to NADPH.
Where do the electrons in the electron transport chain come from in photosynthesis?
The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process protons are pumped from the mitochondrial matrix to the intermembrane space and oxygen is reduced to form water.
What is the source of replacement electrons for those released from photosystem II?
The source of replacement electrons for those released from photosystem 2 are electrons from the split of water.
Where do electrons come from in light dependent reactions?
The light-dependent reactions involve two photosytems (II and I) and an electron transport chain that are all embedded in the thylakoid membrane. Light that is harvested from PSII causes an excited electron of the chlorophyll a special pair to be passed down an electron transport chain (Pq, Cyt, and Pc) to PSI.
What is the first electron donor in Photosystem II?
Water The Primary Electron Donor of Photosystem II of the Cyanobacterium Acaryochloris marina Is a Chlorophyll d and the Water Oxidation Is Driven by a Chlorophyll a/Chlorophyll d Heterodimer. * To whom correspondence should be addressed.