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Water. H2O.
What else can I help you with?
How do photosystem 1 and 2 allow the calvin cycle to work?
No. Photosystems I and II are where light-dependent reactions occur, while the Calvin Cycle is where light-independent reactions occur. Photosynthesis begins with Photosystem II, then Photosystem I, then the products from there go to the Calvin Cycle. (yes photosystem II comes before photosystem I)
Where do electrons get their energy in photosystem II?
From energy in photons
What happens to water molecules as a result of the actions of the photosystem II enzyme?
Photosystem II enzyme splits water molecules into oxygen, electrons, and protons. This process is known as photolysis, and the oxygen is released as a byproduct while the electrons are transferred through the electron transport chain to generate ATP and NADPH for the light-dependent reactions of photosynthesis.
Some photosynthetic organisms contain chloroplasts that lack photosystem II yet are able to survive so what is the best way to detect the lack of photosystem II in these organisms would be?
One way to detect the lack of photosystem II in photosynthetic organisms is to measure the rate of oxygen production during photosynthesis. Photosystem II is responsible for splitting water molecules and releasing oxygen as a byproduct, so the absence of photosystem II would result in reduced or no oxygen production. Another method is to analyze the pigment composition of the chloroplasts since photosystem II contains specific pigments like chlorophyll a and beta-carotene. If these pigments are absent or reduced, it can indicate the lack of photosystem II.
How many times are electrons energized during photosynthesis?
The thylakoid membrane contains 2 photosytems, known as Photosystem I and Photosystem II. Together, they function to absorb light and transfer energy to electrons.
What occurs to water molecules as a result of the actions of photosystem II?
They are split into oxygen and hydrogen.
Electrons from what replace the electrons form photosystem 2 during non cyclic electron flow?
During non-cyclic electron flow, electrons come from water molecules that are split by photosystem II. These electrons replace the ones lost by photosystem II as they are passed along the electron transport chain.
Is carbon dioxide a photosystem II outputs?
No, carbon dioxide is not a direct output of Photosystem II in photosynthesis. Photosystem II's primary function is to harvest light energy and use it to split water molecules into oxygen, protons, and electrons. Carbon dioxide is utilized in the Calvin cycle, which occurs in a different part of the chloroplast.
Where do the electrons needed by the water-splitting photosystem originate?
The electrons needed for water-splitting in the photosystem originate from the splitting of water molecules during the light-dependent reactions of photosynthesis. Water molecules are split into oxygen, protons, and electrons by the photosystem II enzyme, providing the electrons needed to drive the electron transport chain.
Where do electrons for photosystem II come from?
Electrons for photosystem II come from the splitting of water molecules during the light-dependent reactions of photosynthesis. This process, known as photolysis, occurs in the thylakoid membranes of chloroplasts. The electrons released from water molecules replace those lost by chlorophyll molecules in photosystem II, allowing the photosystem to continue the electron transport chain and ultimately produce ATP and NADPH for the Calvin cycle.
Where do the antennae in Photosystem II get the energy to split a water molecule?
Light from the sun
How photosystem I and II replenish its lost electrons?
Splitting of water molecules
How do photosystem 1 and 2 allow the calvin cycle to work?
No. Photosystems I and II are where light-dependent reactions occur, while the Calvin Cycle is where light-independent reactions occur. Photosynthesis begins with Photosystem II, then Photosystem I, then the products from there go to the Calvin Cycle. (yes photosystem II comes before photosystem I)
Oxygen is produced during the light reactions when?
Oxygen is produced during the light reactions of photosynthesis when water molecules are split by the photosystem II complex. This process releases oxygen as a byproduct.
Where do electrons get their energy in photosystem II?
From energy in photons
What happens to water molecules as a result of the actions of the photosystem II enzyme?
Photosystem II enzyme splits water molecules into oxygen, electrons, and protons. This process is known as photolysis, and the oxygen is released as a byproduct while the electrons are transferred through the electron transport chain to generate ATP and NADPH for the light-dependent reactions of photosynthesis.
How are the chlorophyll molecules in PSI and PSII reset?
The chlorophyll molecules in Photosystem I (PSI) and Photosystem II (PSII) are reset when an electron is donated to them from an external source, such as when water is split during the light-dependent reactions of photosynthesis. This replenishes the electrons lost during the light-harvesting process, allowing the chlorophyll molecules to continue their role in capturing and transferring light energy.
