2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Molecules ntawm rRNA yog synthesized nyob rau hauv thaj chaw tshwj xeeb ntawm lub cell nucleus hu ua nucleolus, uas tshwm sim raws li thaj chaw ntom ntom hauv lub nucleus thiab muaj cov noob uas encode rRNA.
TRNA thiab rRNA nyob qhov twg?
Nyob rau hauv eukaryotes, pre-rRNAs yog transcribed, tiav, thiab sib sau ua ke rau hauv ribosomes nyob rau hauv lub nucleolus, thaum pre-tRNAs yog transcribed thiab ua nyob rau hauv lub nucleus thiab ces tso rau hauv lub cytoplasm qhov twg lawv txuas rau dawb amino acids rau protein synthesis.
ribosomal proteins tsim nyob qhov twg?
Cov proteins thiab nucleic acids uas tsim cov ribosome sub-units yog tsim nyob rau hauv cov nucleolus thiab xa tawm los ntawm nuclear pores rau hauv cytoplasm. Ob lub sub-units tsis sib npaug ntawm qhov loj thiab muaj nyob hauv lub xeev no kom txog rau thaum yuav tsum tau siv. Lub sub-unit loj dua yog li ob zaug loj dua qhov me dua.
RNA synthesized nyob qhov twg?
Kev txhais lus yog txheej txheem ntawm kev sib txuas ribonucleic acid (RNA). Synthesis tshwm sim nyob rau hauv lub nucleus ntawm eukaryotic hlwb los yog nyob rau hauv lub cytoplasm ntawm prokaryotesthiab hloov cov noob caj noob ces los ntawm ib tug noob nyob rau hauv deoxyribonucleic acid (DNA) mus rau ib tug strand ntawm RNA uas ces directs protein synthesis.
Puas tib neeg muaj RNA?
Yog, tib neeg lub hlwb muaj RNA. Lawv yog cov tub txib caj ces nrog rau DNA. … Ribosomal RNA (rRNA) – tam sim no txuam nrog ribosomes. Nws muaj cov qauv tsim thiabcatalytic luag hauj lwm ua si nyob rau hauv protein synthesis.
Pom zoo:
Qhov khoom nyob rau pem hauv ntej ntawm lub lens diverging nyob qhov twg?
Teb: Dav hlau daim iav Dav Hlau Daim iav Rau lub teeb rays tawm lub dav hlau daim iav, lub lub kaum sab xis ntawm kev xav sib npaug ntawm lub kaum sab xis ntawm qhov xwm txheej. … Daim duab tsim los ntawm daim iav dav hlau yog ib txwm virtual (lub ntsiab lus tias lub teeb rays tsis yog los ntawm daim duab), upright, thiab ntawm tib lub duab thiab loj npaum li cov khoom nws yog reflecting.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
Leej twg nrhiav tau ribosomal rna?
Lub ribosome yog ib qho nyuaj molecule ua los ntawm ribosomal RNA molecules thiab cov proteins uas tsim lub Hoobkas rau cov protein synthesis hauv hlwb. Xyoo 1955, George E. Palade nrhiav pom ribosomes thiab piav qhia lawv li cov khoom me me hauv cytoplasm uas nyiam cuam tshuam nrog endoplasmic reticulum membrane.
