2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Carotenoids yog ubiquitous thiab tseem ceeb pigments hauv photosynthesis. Lawv nqus tau hauv thaj av xiav-ntsuab ntawm lub hnub ci spectrum thiab hloov lub zog nqus mus rau (bacterio-) chlorophylls, thiab yog li nthuav dav lub wavelength ntau ntawm lub teeb uas muaj peev xwm tsav photosynthesis.
YPuas yog carotene yog photosynthetic pigment?
Carotenes yog photosynthetic pigments tseem ceeb rau photosynthesis. Carotene tsis muaj oxygen atoms. Lawv nqus ultraviolet, violet, thiab xiav lub teeb thiab tawg paj txiv kab ntxwv lossis lub teeb liab, thiab (hauv qhov qis qis) lub teeb daj.
plaub cov xim photosynthetic yog dab tsi?
Chlorophyll ib feem ntau ntawm rau, tam sim no nyob rau hauv txhua tsob nroj uas ua photosynthesis.…
- Carotene: ib lub txiv kab ntxwv xim.
- Xanthophyll: cov xim daj.
- Phaeophytin a: grey-xim av xim.
- Phaeophytin b: a yellow-xim av pigment.
- Chlorophyll a: cov xim xiav-ntsuab.
- Chlorophyll b: cov xim daj-ntsuab.
YPuas yog carotenoids tsis photosynthetic pigments?
Nroj tsuag thiab tsiaj txhu siv cov xim hauv kev taw qhia rau lwm yam kab mob (Chittka thiab Raine, 2006), ib yam li cov xim siv rau hauv paj rau kev nyiam pollinators. … Rau lub hom phiaj ntawm daim ntawv no, peb txiav txim siab cov carotenoids li photoprotectants thiab antioxidants thiab yog li nonphotosynthetic pigments.
peb yog dab tsiphotosynthetic pigments?
Nyob hauv daim duab hauv qab no, koj tuaj yeem pom qhov nqus tau ntawm peb cov xim tseem ceeb hauv photosynthesis: chlorophyll a, chlorophyll b, thiab β-carotene. Cov txheej ntawm wavelengths uas ib tug pigment tsis nqus yog reflected, thiab lub reflected lub teeb yog qhov peb pom raws li xim.
Pom zoo:
Puas yog tsiaj hloov zuj zus los ntawm cov kab mob photosynthetic poj koob yawm txwv?
Ntau pawg tsiaj tau tsim kev sib raug zoo nrog photosynthetic algae. Cov no feem ntau tshwm sim hauv corals, sponges thiab hiav txwv anemones. … Txoj kev xav endosymbiotic qhia tias cov kab mob photosynthetic tau txais (los ntawm endocytosis) los ntawm cov hlwb eukaryotic thaum ntxov los ua thawj cov nroj tsuag.
Qhov twg carotenoids bioavailability yog nce los ntawm kev ua thiab ua noj?
Cov Lus Qhia: Qhov tseem ceeb ntau beta-carotenetau nqus los ntawm cov zaub mov uas muaj cov zaub mov siav, pureed carrots dua los ntawm cov zaub mov uas muaj cov zaub nyoos. Nruab nrab carotenoid plasma teb tau pom nyob rau hauv 6 teev tom qab kev tswj hwm ntawm cov txheej txheem ua tiav carotenoid-muaj ib pluas noj.
Dab tsi yog cov kab mob photosynthetic pom nyob rau hauv cov ntaub so ntswg ntawm coral?
Feem ntau cov pob zeb tsim cov pob zeb muaj cov photosynthetic algae, hu ua zooxanthellae, uas nyob hauv lawv cov ntaub so ntswg. Corals thiab algae muaj kev sib raug zoo. Lub coral muab cov algae nrog kev tiv thaiv ib puag ncig thiab cov tebchaw uas lawv xav tau rau photosynthesis.
Dab tsi yog qhov chaw botanical ntawm carotenoids?
Carotenoids yog ib chav kawm ntawm ntau dua 750 cov xim uas tshwm sim los ntawm nroj tsuag, algae, thiab cov kab mob photosynthetic (1). Cov xim muaj xim nplua nuj no yog qhov chaw ntawm cov xim daj, txiv kab ntxwv, thiab xim liab ntawm ntau cov nroj tsuag.
Vim li cas carotenoids yog qhov tsawg tshaj plaws polar compounds?
Kev sib cais ntawm β-carotene los ntawm kev sib xyaw ntawm lwm cov carotenoids yog nyob ntawm qhov polarity ntawm ib qho chaw. β-Carotene yog ib qho tsis yog-polar compound, yog li nws tau sib cais nrog cov kuab tshuaj tsis-polar xws li hexane.
