Qhov Tseem Ceeb - Grana vs Stroma
Vim Grana thiab Stroma yog ob lub qauv tshwj xeeb ntawm Chloroplast, nws yog ib qho tseem ceeb kom nkag siab tias dab tsi yog chloroplast, ua ntej saib qhov sib txawv ntawm grana thiab stroma. Chloroplast yog categorized nyob rau hauv plastids, uas tshwm sim raws li spherical los yog disc-zoo li lub cev nyob rau hauv lub cytoplasm ntawm eukaryotic cog hlwb. Lwm ob hom plastids yog leucoplast thiab chromoplasts. Chloroplast yog cov plastids feem ntau faib ua homogenously hauv cytoplasm ntawm cov nroj tsuag. Lawv yog lub luag hauj lwm rau kev ua cov photosynthesis, thaum lub sij hawm uas chloroplasts synthesize carbohydrates los ntawm converting lub zog ntawm lub hnub ci mus rau hauv tshuaj zog. Chloroplast yog ob-membrane organelles thiab discoid nyob rau hauv cov duab. Lawv yog tsim los ntawm chloroplast membrane, grana, stroma, plastid DNA, thylakoids, thiab sub-organelles. Qhov sib txawv tseem ceeb ntawm grana thiab stroma yog, grana hais txog cov pawg ntawm thylakoids kos rau hauv stroma ntawm chloroplast thaum stroma hais txog cov dej tsis muaj xim nyob ib puag ncig ntawm grana hauv chloroplast. Kab lus no tsom rau kev sib tham txog qhov sib txawv ntawm grana thiab stroma kom meej.
Grana yog dab tsi?
Grana yog embedded nyob rau hauv lub stroma ntawm chloroplast. Txhua granum muaj 5-25 disc-shaped thylakoids stacked ib qho ntawm lwm yam zoo li ib pawg ntawm npib. Thylakoids tseem hu ua granum lamellae, uas nyob ib puag ncig qhov chaw hu ua locus. Qee cov thylakoids ntawm granum txuas nrog thylakoids ntawm lwm granum ntawm ib daim nyias nyias hu ua stroma lamellae lossis fret membrane. Grana muab qhov chaw loj rau kev sib txuas ntawm Chlorophylls, lwm cov xim photosynthetic, cov khoom siv hluav taws xob thiab cov enzymes los ua lub teeb nyob ntawm qhov tshwm sim ntawm photosynthesis. Cov pigments photosynthetic yog txuas mus rau ib lub network ntawm cov proteins nyob rau hauv ib tug heev meej txoj kev tsim photosystems, uas pab kom lub siab tshaj plaws lub teeb haum. ATP synthase enzymes txuas rau granal membranes pab ua ke ATP molecules los ntawm chemiosmosis.
Stroma yog dab tsi?
Lub stroma yog cov kua dej puv matrix nyob rau hauv daim nyias nyias ntawm chloroplast. Cov kua dej yog cov xim tsis muaj xim hydrophilic matrix vaj tsev DNA, ribosomes, enzymes, roj tee thiab hmoov nplej nplej. Lub teeb-yooj yim theem ntawm photosynthesis (txo cov pa roj carbon dioxide) tshwm sim hauv stroma. Lub grana yog ib puag ncig los ntawm cov kua dej stromal kom cov khoom ntawm lub teeb nyob ntawm cov tshuaj tiv thaiv tuaj yeem nkag mus rau hauv lub stroma ntawm granal membranes.
Stroma yog qhia los ntawm lub teeb ntsuab.
Qhov txawv ntawm Grana thiab Stroma yog dab tsi?
Definition of Grana thiab Stroma:
Grana: Lub grana yog hais txog cov pawg ntawm thylakoids kos rau hauv stroma ntawm chloroplast.
Stroma: Lub stroma yog hais txog cov kua dej uas muaj cov matrix nyob rau hauv daim nyias nyias ntawm chloroplast.
Grana vs Stroma:
qauv:
Grana: Txhua granum muaj 5-25 disc-shaped thylakoids stacked ib qho ntawm lwm qhov zoo li ib pawg ntawm npib. Txhua tus muaj txoj kab uas hla ntawm 0.25 - 0.8 μ
Stroma: kua dej matrix muaj DNA, ribosomes, enzymes, roj tee thiab hmoov nplej nplej.
Qhov chaw:
Grana: Nws pom nyob hauv stroma.
Stroma: Nws pom nyob rau hauv lub puab daim nyias nyias ntawm chloroplast.
YEnzymes:
Grana: Grana muaj cov enzymes xav tau rau cov tshuaj tiv thaiv ntawm photosynthesis thiab tseem ATP synthase enzymes xav tau rau kev sib txuas ntawm ATP molecules los ntawm chemiosmosis.
Stroma: Stroma muaj cov enzymes xav tau rau lub teeb-yeeb yaj kiab ntawm photosynthesis.
Functions:
Grana: Lawv muab qhov chaw loj rau kev txuas ntawm Chlorophylls, lwm cov xim photosynthetic, cov nqa hluav taws xob thiab cov enzymes, yog li pab rau photosynthesis.
Stroma: Stroma tsev nyob rau hauv cov organelles ntawm chloroplast thiab cov khoom ntawm photosynthesis thiab tseem muab qhov chaw rau lub teeb-yooj yim tshuaj tiv thaiv ntawm photosynthesis.
Image Courtesy: "Chloroplast II" los ntawm Kelvinsong - Tus kheej ua haujlwm. (CC BY-SA 3.0) ntawm Wikimedia Commons “Granum” (CC BY-SA 3.0) ntawm Wikimedia Commons “Thylakoid”. (Public Domain) via Wikipedia
