What is the function of the electron transport chain of photosystem II?
The electron transport chain helps to move electrons from PS 2 to PS 1. It makes oxidation-reduction reactions within the photosystems. It also uses energy to bring in hydrogren molecules to make a concentration gradient in the thylakoid compartment, which eventually creates ATP due to ATP synthase.
What does photosystem I and II produce?
Photosystem I or PS I and Photosystem II or PS II are the protein-mediated complex, and the main aim is to produce energy (ATP and NADPH2), which is used in Calvin cycle, the PSI uses light energy to convert NADP+ to NADPH2.
What happens during photosystem II?
Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules. As these electrons flow down the chain, they are used to pump hydrogen ions across the membrane, providing even more power for ATP synthesis.
What is the product of photosystem 1?
ATP
What happens when Photosystem I is inhibited?
A herbicide that disrupts photosystem 1 disturbs the electron transport in the light reaction of photosynthesis. It leads to the deficiency of NADPH because photosystem 1 is the electron donor for the NADPH production. The secondary effect of a herbicide that targets photosystem 1 is it disrupts the membrane.
Does Dcmu inhibit oxygen production?
DCMU can block electron transfer between the primary quinone electron accepter ( ) and secondary quinone electron accepter ( ) on the reducing side of PSII [26]. This interrupts the photosynthetic electron transport chain in photosynthesis and thus reduces the generation of O2 from splitting water molecules via PSII.
What is the role of oxidation and reduction in photosynthesis?
Photosynthesis in Aquatic Plants Water is oxidized in photosynthesis, which means it loses electrons, and carbon dioxide is reduced, meaning it gains electrons.
What happens when light is absorbed by chlorophyll?
What happens when light is absorbed by a molecule such as chlorophyll? The energy from the light excites an electron from its ground energy level to an excited energy level (Figure 19.7).
Which hypothesis for why plant roots are not green in appearance seems most likely?
Lab Drill 3 of 5 Which hypothesis for why plant roots are not green in appearance seems most likely? Roots serve the function of absorbing water and nutrients and O anchoring the plant to the ground. Therefore, the chlorophyll that absorbs sunlight is reduced.
What color is Xanthophyll reflect?
Blue-green. The plant pigment xanthophyll absorbs light in the range of 400 – 550 nm and reflects the other wavelengths.
What color of light is absorbed by carotenoids?
Carotenoids absorb light in the blue-green and violet region and reflect the longer yellow, red, and orange wavelengths; these pigments also dispose excess energy out of the cell.