Factors determining algal growth - Light and photosynthesis

5 important questions on Factors determining algal growth - Light and photosynthesis

Is photosynthesis restricted to a waveband?

Yes, it is restricted to the 400-700 nm waveband. This represents the photosynthetically active radiation (PAR).

How is the light energy transported by pigments?

The light energy is absorbed to a chlorophyll-a molecule in a special protein-environment (Reaction centre), here energy conversion takes place.

How are the light-harvesteing pigments also called?

Antenna
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What are the two types of reaction centres:


Photosystem I (PSI)
Photosystem II (PSII)
  • the complex where water is split and oxygen evolution occurs as by-product

What is light attenuation?


The reduction in light over depth, caused by scattering and absorption. Can be estimated by the Lambert-Beert law.

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