Granum: (plural, grana) Ib feem ntawm cov thylakoid membrane hauv chloroplast. Grana ua haujlwm hauv lub teeb pom kev ntawm photosynthesis..
Yuav ua li cas hauv grana ntawm chloroplast?
Photosynthesis tshwm sim hauv ob kauj ruam. Hauv thawj kauj ruam, cov tshuaj tiv thaiv lub teeb, chlorophyll hauv grana absorbs lub teeb. Lub teeb lub zog raug xa mus los ntawm ntau cov enzymes hauv thylakoid membrane, uas ua rau muaj ob lub zog nqa khoom: ATP thiab NADPH.
Grana nyob rau hauv chloroplast nyob qhov twg?
Nyob ib ntus thylakoids daim ntawv nruj nruj cheeb tsam hu ua grana. Lub jellylike matrix hu ua stroma ncig lub thylakoids thiab grana. Qhov tshwj xeeb tshaj plaws ntawm chloroplasts yog lawv cov xim ntsuab. Qhov no yog vim ob hom xim chlorophyll, uas yog concentrated hauv grana.
Yuav ua li cas cov tshuaj muaj nyob rau hauv lub grana ntawm chloroplast?
Encyclopædia Britannica, Inc. Sab hauv cov qauv ntawm chloroplast. Sab hauv muaj cov hnab ntim ntawm cov khoom siv hluav taws xob (thylakoids) tsim los ntawm invagination thiab fusion ntawm daim nyias nyias. Thylakoids feem ntau yog teem rau hauv pawg (grana) thiab muaj cov xim photosynthetic (chlorophyll).
Dab tsi yog qhov ua haujlwm ntawm grana thiab stroma hauvchloroplast yog dab tsi?
Grana ntawm chloroplast muaj cov xim uas ua los ntawm chlorophyll-a, chlorophyll-b, carotine thiab xanthophyll thaum lub stroma muaj cov enzymes tsim nyog rau photosynthesis nrog rau DNA, RNA thiab cytochrome system..
