Video: Dab tsi yog tsim nyob rau theem ob ntawm photosynthesis?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Teb thiab piav qhia: Lub theem ob ntawm photosynthesis suav nrog cov pa roj carbon fixation thiab hu ua cov tshuaj tiv thaiv tsaus nti, lossis Calvin voj voog. Photosynthesis pib nrog thawj theem , hu ua lub teeb pom kev zoo. Ntawm no, lub zog los ntawm tshav ntuj raug sau thiab hloov mus rau hauv tshuaj lom neeg lub zog hauv daim ntawv ntawm NADPH thiab ATP.
Tsuas yog li ntawd, dab tsi yog tsim nyob rau hauv theem ob ntawm photosynthesis?
Cov theem ob ntawm photosynthesis yog cov ntau lawm cov piam thaj los ntawm carbon dioxide. Cov txheej txheem no tshwm sim nyob rau hauv ib tug tas mus li voj voog, muaj npe tom qab nws nrhiav tau, Melvin Calvin. Lub voj voog Calvin siv CO2 thiab lub zog ib ntus khaws cia hauv ATP thiab NADPH los ua kom cov piam thaj qab zib.
Tsis tas li ntawd, 2 hom photosynthesis yog dab tsi? Muaj ob hom photosynthetic txheej txheem: oxygenic photosynthesis thiab anoxygenic photosynthesis . Cov ntsiab cai dav dav ntawm anoxygenic thiab oxygenic photosynthesis zoo sib xws, tab sis oxygenic photosynthesis Nws yog feem ntau pom nyob rau hauv cov nroj tsuag, algae thiab cyanobacteria.
Ib yam li ntawd, qhov thib ob theem ntawm photosynthesis tshwm sim?
Lub teeb-dependent cov tshuaj tiv thaiv coj qhov chaw nyob rau hauv thylakoid daim nyias nyias nyob rau hauv lub granum (pawg ntawm thylakoids), nyob rau hauv lub chloroplast. Ob tug theem ntawm photosynthesis : Photosynthesis tshwm sim nyob rau hauv ob theem : Lub teeb-dependent cov tshuaj tiv thaiv thiab Calvin lub voj voog (light-independent reactions).
Dab tsi yog theem ntawm photosynthesis?
Nws yog qhov yooj yim los faib cov photosynthetic txheej txheem hauv cov nroj tsuag ua plaub theem , txhua qhov tshwm sim nyob rau hauv ib cheeb tsam ntawm chloroplast: (1) nqus ntawm lub teeb, (2) electron thauj mus rau qhov txo ntawm NADP+ rau NADPH, (3) tiam ntawm ATP, thiab (4) kev hloov pauv ntawm CO2 nyob rau hauv carbohydrates (carbon fixation).
Pom zoo:
Lub npe ntawm cov tshuaj yog dab tsi uas lub zog khaws cia nyob rau hauv thawj theem ntawm photosynthesis?
Cov kev cuam tshuam ntawm lub teeb-dependent siv lub teeb lub zog los ua ob lub molecules uas xav tau rau theem tom ntej ntawm photosynthesis: lub zog cia molecule ATP thiab txo cov khoom siv hluav taws xob NADPH. Nyob rau hauv cov nroj tsuag, lub teeb tshwm sim tshwm sim nyob rau hauv lub thylakoid daim nyias nyias ntawm organelles hu ua chloroplasts
Ob theem tseem ceeb ntawm photosynthesis yog dab tsi thiab txhua theem tshwm sim nyob qhov twg?
Ob theem ntawm photosynthesis: Photosynthesis yuav siv sij hawm qhov chaw nyob rau hauv ob theem: lub teeb-dependent kev tshwm sim thiab lub Calvin voj voog (lub teeb-yooj yim kev xav). Lub teeb-nyob ntawm cov tshuaj tiv thaiv, uas tshwm sim hauv thylakoid daim nyias nyias, siv lub teeb lub zog los ua ATP thiab NADPH
Ob qhov tseem ceeb ntawm lub voj voog ntawm tes yog dab tsi thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Muaj ob theem tseem ceeb hauv lub voj voog ntawm tes. Thawj theem yog interphase thaum lub cell loj hlob thiab replicates nws DNA. Qhov thib ob yog theem mitotic (M-Phase) thaum lub sijhawm cell faib thiab hloov ib daim qauv ntawm nws cov DNA mus rau ob lub hlwb zoo tib yam
Dab tsi yog theem ntawm photosynthesis nyob rau hauv kev txiav txim?
Nws yog qhov yooj yim los faib cov txheej txheem photosynthetic hauv cov nroj tsuag ua plaub theem, txhua qhov tshwm sim hauv thaj tsam ntawm chloroplast: (1) kev nqus ntawm lub teeb, (2) kev thauj hluav taws xob ua rau txo qis ntawm NADP + rau NADPH, (3) tiam ntawm ATP, thiab (4) hloov pauv ntawm CO2 rau hauv carbohydrates (carbon fixation)
Dab tsi yog 2 qhov tseem ceeb ntawm lub voj voog ntawm tes thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Cov xwm txheej no tuaj yeem muab faib ua ob qhov tseem ceeb: interphase (hauv nruab nrab ntawm kev sib faib theem ua pawg G1 theem, S theem, G2 theem), thaum lub xov tooj ntawm tes tsim thiab ua nrog nws cov haujlwm metabolic; mitotic theem (M mitosis), thaum lub sij hawm lub cell yog replicating nws tus kheej