Why does oxygenic photosynthesis require two photosystems?
In oxygenic photosynthesis Both photosystems I and II are required for oxygenic photosynthesis. When photosystem II absorbs light, electrons in the reaction-center chlorophyll are excited to a higher energy level and are trapped by the primary electron acceptors.
What happens when Photosystem II is damaged?
Organisms that rely on oxygenic photosynthesis are subject to the effects of photo-oxidative damage, which impairs the function of photosystem-II (PSII). This phenomenon has the potential to lower rates of photosynthesis and diminish plant growth.
Why do plants need 2 photosystems?
Plants have two photosystems because there is not enough energy provided from a single photon to produce the energy carrying molecules needed, like…
What is generated during the oxygenic photosynthesis?
Oxygenic photosynthesis—the use of light energy to synthesize ATP and NADPH resulting in the production of oxygen from water—underpins the survival of virtually all higher life forms on earth.
What is required for oxygenic photosynthesis?
Figure: Photosynthesis overview: Photosynthesis changes sunlight into chemical energy, splits water to liberate O2, and fixes CO2 into sugar. Carbon dioxide + electron donor + light energy → carbohydrate + oxidized electron donor. This is called oxygenic photosynthesis.
Where does photosynthesis take place in a Photoautotrophic bacterium?
chloroplast
In all phototrophic eukaryotes, photosynthesis takes place inside a chloroplast, an organelle that arose in eukaryotes by endosymbiosis of a photosynthetic bacterium (see Unique Characteristics of Eukaryotic Cells). These chloroplasts are enclosed by a double membrane with inner and outer layers.
How do plants protect themselves from photo inhibition?
Plants have mechanisms that protect against adverse effects of strong light. It is also apparent that turning or folding of leaves, as occurs, e.g., in Oxalis species in response to exposure to high light, protects against photoinhibition.
Where is RuBP found?
It is an organic substance. Its main use is during the process of photosynthesis. It is located in the plant leaves; we can understand the use of the compound by going through the following lines: The formula for expressing Ribulose- Bisphosphate is RuBP.
Why is photosystem II coming first in the order of operation instead of photosystem I?
photosystem II. There are two types of photosystems in the light-dependent reactions, photosystem II (PSII) and photosystem I (PSI). PSII comes first in the path of electron flow, but it is named as second because it was discovered after PSI.
What is required for oxygenic photosynthesis to occur?
Carbon dioxide + electron donor + light energy → carbohydrate + oxidized electron donor. In plants, algae and cyanobacteria, photosynthesis releases oxygen. This is called oxygenic photosynthesis.
Why oxygenic photosynthesis is important?
The origin of oxygenic photosynthesis was the most important metabolic innovation in Earth history. It allowed life to generate energy and reducing power directly from sunlight and water, freeing it from the limited resources of geochemically derived reductants.