2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub capsid yog tsim los ntawm cov khoom me me ntawm cov protein hu ua capsomers. Lub capsid + genome ua ke yog hu ua nucleocapsid. Cov kab mob kuj tseem tuaj yeem muaj cov khoom siv ntxiv, nrog rau feem ntau yog cov txheej txheej membranous ntxiv uas nyob ib puag ncig nucleocapsid, hu ua hnab ntawv.
Cov kab mob puas muaj cov kab mob sab nraud?
Ntxiv rau lub capsid, qee cov kab mob kuj muaj ib qho lipid sab nraudhu ua lub hnab ntawv, uas nyob ib puag ncig tag nrho capsid. Cov kab mob nrog lub hnab ntawv tsis muab cov lus qhia rau lub hnab ntawv lipids. Hloov chaw, lawv "qiv" ib thaj los ntawm cov tswv tsev membranes ntawm lawv txoj kev tawm ntawm tes.
Txhua tus kab mob puas muaj daim nyias nyias lossis lub hnab ntawv?
Tsis yog txhua tus kab mob muaj lub hnab ntawv. Cov hnab ntawv feem ntau yog muab los ntawm ib feem ntawm cov cell membranes (phospholipids thiab proteins), tab sis suav nrog qee cov kab mob glycoproteins. Lawv tuaj yeem pab cov kab mob kom tsis txhob muaj lub cev tiv thaiv kab mob.
Puas yog cov txheej txheem ntawm kev txuas mus rau tus tswv cell?
Lub sijhawm txuas thiab nkag mus, tus kab mob txuas nws tus kheej rau hauv lub xov tooj ntawm tes thiab txhaj nws cov khoom siv caj ces rau hauv nws. Thaum lub sij hawm uncoating, replication, thiab sib sau ua ke, tus kab mob DNA los yog RNA incorporates nws tus kheej mus rau hauv lub host cell cov khoom siv caj ces thiab induces nws mus replicate tus kab mob genome.
capsomeres yog dab tsi?
Ib tug virion muaj ib tug nucleic acid core, ib tug txheej proteintxheej los yog capsid, thiab qee zaum ib lub hnab ntawv sab nrauv ua los ntawm cov protein thiab phospholipid daim nyias nyias muab tau los ntawm tus tswv tsev cell. Lub capsid yog tsim los ntawm protein subunits hu ua capsomeres. Cov kab mob kuj tseem muaj cov protein ntxiv, xws li enzymes.
Pom zoo:
Koj puas yog sab nraud lossis sab hauv?
Koj ib txwm muaj peev xwm tsom sab nraud lossis tsom mus rau sab hauv. Kev tsom mus rau sab nraud txhais tau hais tias ua tib zoo saib xyuas qhov tshwm sim nyob ib puag ncig koj. Kev tsom mus rau sab hauv txhais tau tias ua tib zoo saib xyuas qhov tshwm sim hauv koj:
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Puas ua rau qhov kev tsim khoom muaj peev xwm nkhaus hloov mus rau sab nraud?
Kev hloov pauv sab nrauv lossis sab hauv hauv PPF tuaj yeem yog tau tsav los ntawm kev hloov pauv ntawm tag nrho cov khoom muaj nqis ntawm cov khoom tsim khoom lag luam Kev lag luam raws li qhov tseem ceeb ntawm kev tsim khoom yog kev sib txuas ntawm lwm yam peb yam.
Puas muaj cov pob txha sab nraud tsis muaj dej?
Kab'exoskeletons yog zais los ntawm lawv cov epidermis thiab tsim peb txheej: endocuticle, exocuticle thiab epicuticle. Lub epicuticle yog txheej saum toj kawg nkaus thiab yog dej tsis zoo. … Vim hais tias cov exoskeleton yog tsim los ntawm cov khoom carbohydrate hu ua chitin, nws yeej nyob twj ywm ntawm nws tus kheej.
Qhov twg yog sab qab teb sab hnub tuaj lossis sab qab teb sab hnub tuaj?
Yog kuv tsis yuam kev, "sab qab teb-sab hnub tuaj" yog li nws sau ua lus Askiv, whereas "southeast" yog daim ntawv hauv American English. Puas yog sab qab teb ib lo lus lossis ob? (abbreviation S.E.) kev taw qhia ntawm sab qab teb thiab sab hnub tuaj, los yog ib feem ntawm ib cheeb tsam los yog lub teb chaws nyob rau hauv qhov kev taw qhia:
