Which One Of The Following Is Not A Product When Photosystem Ii Oxidizes A Molecule Of Water?


What products result specifically from photosystem II?

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.

Which of the following molecules is found in the reaction center of photosystem II?


Photosystem II has a special oxidizable chlorophyll

At the core of the PS II reaction center lie a special pair of chlorophyll molecules. One of these designated P680 for it’s characteristic spectral properties is the chlorophyll that actually undergoes oxidation during photosynthetic electron transport.

What happens in photosystem II quizlet?

Photosystem II triggers chemiosmosis and ATP synthesis in the chloroplast. Electrons are passed from the reduced pheophytin to an electron transport chain in the thylakoid membrane. This ETC is similar in structure and function to the ETC in mitochondria.

Which of the following molecules is a reactant of photosynthesis a CO2 B Glucose CO2 D chlorophyll?

The reactants for photosynthesis are light energy water carbon dioxide and chlorophyll while the products are glucose (sugar) oxygen and water.

What happens when light hits photosystem 2?

A photon strikes photosystem II to initiate photosynthesis. … The ions flow through ATP synthase from the thylakoid space into the stroma in a process called chemiosmosis to form molecules of ATP which are used for the formation of sugar molecules in the second stage of photosynthesis.

Which of the following are the main functions of photosystem II?

Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting oxygen evolution and plastoquinone reduction.

Which of the following is not directly used in the Calvin cycle?

Which of the following is NOT directly used in the Calvin Cycle? While water is used in the light reactions of photosynthesis it is not used in the Calvin cycle. In the Calvin cycle ATP helps to fuel the fixation of carbon from carbon dioxide into glucose and this reaction is catalyzed by the enzyme rubisco.

Which of the following are products of the light reactions?

The light-dependent reactions produce ATP and NADPH which are then used by the light-independent reactions. The light-dependent reactions pass electrons through an electron transport chain to the light-independent reactions.

Which of the following are products of the light reactions of photosynthesis that are used as reactants in the Calvin cycle?

Unlike the light reactions which take place in the thylakoid membrane the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts). This illustration shows that ATP and NADPH produced in the light reactions are used in the Calvin cycle to make sugar.

What is produced in photosystem 2?

Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy. It oxidizes two molecules of water into one molecule of molecular oxygen.

What does photosystem 2 come first?

Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules. … First when the electrons are removed the water molecule is broken into oxygen gas which bubbles away and hydrogen ions which are used to power ATP synthesis.

When photosystem II loses electrons which molecule or structure provides replacement electrons?

The reaction center chlorophyll releases two energized electrons which are replaced by the electrons from photosystem II. How are the electrons from photosystem II replaced? The boosted electrons lost from the reaction center in photosystem II are replaced by electrons stripped from a water molecule.

What is not a product of photosynthesis?

The correct option is c) carbon dioxide.

Is carbon dioxide a reactant or product?

Methane and oxygen (oxygen is a diatomic — two-atom — element) are the reactants while carbon dioxide and water are the products.

Is carbon dioxide a reactant or product of photosynthesis?

The reactants of photosynthesis are everything to the left of the “———>” arrow thus the reactants of photosynthesis are carbon dioxide water and sunlight energy. The products of photosynthesis are everything to the right of the “———>” arrow thus the products of photosynthesis are glucose and oxygen.

Which of the following is not a product of light reaction of photosynthesis?

Complete answer:

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NADH is not a product of light reaction of photosynthesis.

Is photosystem 2 cyclic or noncyclic?

The photophosphorylation process which results in the movement of the electrons in a non-cyclic manner for synthesizing ATP molecules using the energy from excited electrons provided by photosystem II is called non-cyclic photophosphorylation.

What happens in photosystem 2 pigment system?

Photosystem 2 is first in the cascade followed by the photosystem 1. It captures photons and uses this energy to extract electrons from water. These electrons will flow through the cascade and transport the hydrogen ions across the membrane providing power for ATP synthesis.

What functions do photosystem I and photosystem II perform?

Two large membrane protein complexes photosystems I and II (abbreviated as PS I and PS II respectively) are embedded in this membrane. They catalyze the initial step of photosynthesis the light induced charge separation across the photosynthetic membrane.

What is the energy carrying product of photosystem II?

Term Energy Definition The ability to do work
Term What are the product(s) of photosystem II? Definition oxygen ATP
Term What are the product(s) of photosystem I? Definition NADPH
Term When does photolysis occur? Definition photosystem II
Term When does photophosphorylation occur? Definition photosystem II

Which of the following is a product of photosynthesis?


Sugar (glucose) and oxygen are the two products of photosynthesis.

What are the products of the Calvin cycle?

Products. The immediate products of one turn of the Calvin cycle are 2 glyceraldehyde-3-phosphate (G3P) molecules 3 ADP and 2 NADP+. (ADP and NADP+ are not really “products”. They are regenerated and later used again in the Light-dependent reactions).

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Which of the following is not produced during an anabolic process quizlet?

Terms in this set (19) outside of the cell. Which of the following is not produced during an anabolic process? pyruvic acid.

What is the main product of the Calvin cycle quizlet?

The product of the Calvin cycle is a triose-phosphate sugar that is either exported from the chloroplast or used to regenerate RUBP.

What are the 3 products of light dependent reactions?

Glucose ATP and O2

What are the three products of the light dependent reactions?

CO2​ H2​O and NADPH.

Which of the following products is produced during the light reactions of photosynthesis?

During these initial reactions water is used and oxygen is released. The energy from sunlight is converted into a small amount of ATP and an energy carrier called NADPH. Together with carbon dioxide these are used to make glucose (sugar) through a process called the Calvin Cycle.

Which of the following are three products of light-dependent reactions of photosynthesis?

The light-dependent reactions require light and water occur in the thylakoids and produce ATP and NADPH. The light-independent reactions require carbon dioxide occur in the stroma and produce high-energy sugars.

What supplies the electrons that are lost in photosystem 2?

Figure 2. The photosystem II (PSII) reaction center and the photosystem I (PSI). In the photosystem II (PSII) reaction center energy from sunlight is used to extract electrons from water.

What is the end product of photosystem I?


ATP is the product of photosystem I.

Is ATP produced in photosystem 2?

Electrons are transferred sequentially between the two photosystems with photosystem I acting to generate NADPH and photosystem II acting to generate ATP. … Electron transport through photosystem II is thus coupled to establishment of a proton gradient which drives the chemiosmotic synthesis of ATP.

How does photosystem 2 replenish its electrons?

The energized electrons are replaced by oxidizing water to form hydrogen ions and molecular oxygen. to NADPH or are used in non-cyclic electron flow. DCMU is a chemical often used in laboratory settings to inhibit photosynthesis.

Photosystem II
MetaCyc metabolic pathway
PRIAM profile

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Did photosystem 1 or 2 evolved first?

Photosystem II because when the photosystem II loses electrons they are quickly replaced by electrons from water. Photosystem I relies on photosystem II to feed it electrons so photosystem I most likely evolved AFTER photosystem II.

Does photosystem 1 occur before photosystem 2?

Photosystem I occurs before photosystem II during the light reactions. a collection of pigments that trap solar energy and focus it on reaction centers releasing high-energy electrons. … Photosystem I uses the high-energy electrons to reduce NADP+ to NADPH whereas photosystem II uses them to convert ADP into ATP.

Photosystem II Function: The P680 Reaction Center

Tutorial Chap 6 | Part A (Q1 – Q22)

114-Photosystem II

Photosystem II

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