Photoreceptor - phototropism, Biology

Photoreceptor - Phototropism

The molecular nature of the photoreceptor is unsolved. Initially in the 1930s, some form of carotenoid was thought to be the phototropic receptor. General opinion at present, however, favors some kind of flavin as phototropic receptor, largely on the basis of the spectral match between phototropic action and flavin absorption in the ultra violet region. The action spectra for phototropism compare with the absorption spectrum of riboflavin and carotene, clearly favors riboflavin as the absorbing pigment. In some cases it can also be a flavoprotein.

Posted Date: 1/24/2013 1:28:07 AM | Location : United States







Related Discussions:- Photoreceptor - phototropism, Assignment Help, Ask Question on Photoreceptor - phototropism, Get Answer, Expert's Help, Photoreceptor - phototropism Discussions

Write discussion on Photoreceptor - phototropism
Your posts are moderated
Related Questions
Q. What are some human diseases caused by virus and what are their respective modes of transmission? The major viral diseases transmitted by respiratory secretions (cough, snee

Explain the Manifestations of Iron Deficiency Anaemia? • Paleness of conjunctiva • Paleness of tongue • Paleness of mucosa of soft palate • Low haemoglobin • Swelling of

Q. How does phosphocreatine act in the muscle relaxation and contraction? Phosphocreatine is the major means of energy storage of the muscle cells. During relaxed periods AT

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4


Which photosystem-I or II-most likely evolved first? Describe your reasoning. Photosystem II most likely evolved first, because it changes electrons lost from chlorophyll

Chelating agents Oxalates: Only a few plants contain sufficient amounts of sodium and potassium oxalate to be considered toxic. Moreover, ruminants that consume these plants

What gum conditions may result from a failure to remove plaque? Gingivitis (gum inflammation) and periodontal disease (infection of the socket) might be result from a failure t

Results of CABG: In most centres where this operation is routinely conducted the mortality is 1-2 per cent. In high-risk group of patients this may go up to 5 to 10 per cent.

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4