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The role of photosystem in the light reactions of photosynthesis is to absorb light energy. This energy is used to convert water and carbon dioxide into ATP and NADPH, which are essential for the Calvin cycle to produce glucose. Photosystem I and II work together to carry out these processes.
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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.
Are the chlorophyll molecules in PSI and PSII the same?
No, the chlorophyll molecules in Photosystem I (PSI) and Photosystem II (PSII) are not the same. They differ in absorption spectra and redox properties, allowing them to play distinct roles in the light reactions of photosynthesis.
True or false an electron transport chain connects photosystem 1 and photosystem2?
False. The electron transport chain connects the two photosystems in the thylakoid membrane, but it does not directly connect photosystem 1 and photosystem 2. Instead, it shuttles electrons between the two photosystems as part of the light-dependent reactions of photosynthesis.
Where do electrons for photosystem II come from?
The electrons for photosystem II come from water molecules. In the light-dependent reactions of photosynthesis, water is split into oxygen, protons, and electrons in a process called photolysis. These electrons are then transferred to photosystem II to begin the photosynthetic electron transport chain.
Where do electrons get their energy in photosystem I?
In photosystem I, electrons get their energy from the absorption of light by chlorophyll molecules. When light is absorbed, it excites the electrons in the chlorophyll, allowing them to move through a series of electron carriers in the photosystem to generate energy for the production of ATP and NADPH during photosynthesis.
Which is a role a photosystem 2 in the light reactions?
Splitting H2o
Which role is of photosystem ii in the light reactions?
Splitting H2O (Apex)
Which is the role of a photosystem I in the light reactions?
To make energy-carrier molecules like NADPH
What is a role of photosystem 2 in light reactions?
Photosystem two produces O2, ATP, and NADP+
Which is a role of photosystem 11 in the light reactions?
Photosystem II plays a role in absorbing light energy and initiating the process of photosynthesis by passing electrons through the electron transport chain. It also splits water molecules to release oxygen as a byproduct.
How do photosystem 1 and 2 allow the calvin cycle to work?
Photosystem I and Photosystem II are involved in the light reactions of photosynthesis. Photosystem II absorbs light energy to split water molecules and produce ATP, while Photosystem I absorbs light energy to produce NADPH. Both ATP and NADPH are then used in the Calvin cycle to convert carbon dioxide into glucose. Without the products of the light reactions, the Calvin cycle cannot proceed.
What is the role of the plastocyanin?
Plastocyanin is a copper-containing protein that plays a crucial role in photosynthesis by shuttling electrons between photosystem II and photosystem I in the thylakoid membrane of chloroplasts. It helps in the transfer of electrons during the light-dependent reactions of photosynthesis.
What is the role of photosystem ll in the light reactions?
we call it calvin cycle. It is making glucose.
Which is a role in photosystem in the light reactions?
it is the first phase. it is making NADPh and ATP.
Water participates directly in the light reactions of photosynthesis by?
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
How does water participate in the light reactions of photosynthesis?
Donating electrons to photosystem 2
Which is a role of photosystem 1 in the light reactions?
to make energy-carrier molecules like NADPH Apex
