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Biochemistry 4th Edition by Christopher Mathews,Kensal van Holde, Dean Appling, Spencer Anthony Cahill
Edition 4ISBN: 978-0138004644Biochemistry 4th Edition by Christopher Mathews,Kensal van Holde, Dean Appling, Spencer Anthony Cahill
Edition 4ISBN: 978-0138004644 Exercise 6
The substance dichlorophenyldimethylurea (DCMU) is an herbicide that inhibits photosynthesis by blocking electron transfer between plastoquinones in photosystem II.
(a) Would you expect DCMU to interfere with cyclic photophosphorylation
(b) Normally, DCMU blocks O2 evolution, but addition of ferri-cyanide to chloroplasts allows O2 evolution in the presence of DCMU. Explain.
(a) Would you expect DCMU to interfere with cyclic photophosphorylation
(b) Normally, DCMU blocks O2 evolution, but addition of ferri-cyanide to chloroplasts allows O2 evolution in the presence of DCMU. Explain.
Explanation
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(a)Since plastoquinones are not involved...
Biochemistry 4th Edition by Christopher Mathews,Kensal van Holde, Dean Appling, Spencer Anthony Cahill
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