"withatp" - 1 õppematerjal

TAIMEFÜSIOLOOGIA KORDUSKÜSIMUSED 2012

Plants produce starch by first converting glucose 1-phosphate to ADP-glucose using the enzyme glucose-1-phosphate adenylyltransferase. This step requires energy in the form of ATP. The enzyme starch synthase then adds the ADP-glucose via a 1,4-alpha glycosidic bond to a growing chain of glucose residues, liberating ADP and creating amylose. By contrast, starch synthesis occurs within chloroplasts. The first step is a condensation of glucose-1-phosphate withATP. Starch synthesis requires withdrawal of hexose-P from the mesophyll cellular pool. Using hexose-P for starch synthesis requires its a_________ by ATP. Only occurs in actively photosynthesizing cells. 87. Nimetage ühendid, mis floeemis liikudes tagavad mittefotosünteesivate kudede varustamise fotosünteesi produktidega. H2O, suc2 88. Kirjeldage plasmodesmi struktuuri.