“…There are currently about 40-50 works published on scattering from photosynthetic systems-photosynthetic bacteria, diatoms and other algae and of course from higher plants. Small-angle scattering has been used to investigate structure and dynamic changes of thylakoid membrane systems of plants (Finean et al, 1953;Kratky et al, 1959;Kreutz and Menke, 1960a;Kreutz and Menke, 1960b;Kreutz and Menke, 1962;Kreutz, 1963a;Kreutz, 1963b;Kreutz, 1964;Sadler, 1976;Li, 1979;Sadler and Worcester, 1982a;Sadler and Worcester, 1982b;Diederichs et al, 1985;Garab et al, 1997;Kirkensgaard et al, 2009;Nagy, 2011;Nagy et al, 2011;Nagy et al, 2013;Ünnep et al, 2014b;Herdean et al, 2016;Ünnep et al, 2017;Zsiros et al, 2020;Ünnep et al, 2020), protists (Sadler et al, 1973;Worcester, 1976;Sadler and Worcester, 1982a), diatoms (Nagy et al, 2011;Nagy et al, 2012), photosynthetic bacteria (Pape et al, 1974;Hodapp and Kreutz, 1980;Liberton et al, 2013b;Ünnep et al, 2014a;Li et al, 2016;Stingaciu et al, 2016;Eyal et al, 2017;Jakubauskas et al, 2019), algae (Nagy et al, 2011;Nagy...…”