2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
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.
Leej twg nrhiav tau rRNA?
Severo Ochoa yeej xyoo 1959 Nobel nqi zog hauv tshuaj tom qab nws tshawb pom tias RNA yog li cas. Qhov sib lawv liag ntawm 77 nucleotides ntawm poov xab tRNA tau pom los ntawm Robert W. Holley xyoo 1965. Holley yeej 1968 Nobel nqi zog hauv tshuaj rau nws txoj kev tshawb fawb.
Leej twg yog tus thawj tus pom ribosome?
Discovery. Ribosomes tau pom thawj zaug hauv nruab nrab-1960s los ntawm Romanian-American cell biologist George Emil Palade, siv lub tshuab ntsuas hluav taws xob, ua cov khoom ntom ntom lossis granules.
keeb kwm ntawm ribosomal RNA yog dab tsi?
Molecules ntawm rRNA yog synthesized nyob rau hauv ib cheeb tsam tshwj xeeb ntawm lub cell nucleus hu ua lub nucleolus, uas tshwm sim raws li ib tug ntom cheeb tsam nyob rau hauv lub nucleus thiab muaj cov noob uas encode rRNA.
RNA leej txiv yog leej twg?
Leslie Orgel, 80; chemist yog leej txiv ntawm RNA ntiaj teb txoj kev xav ntawm lub hauv paus ntawm lub neej.
Pom zoo:
Leej twg nrhiav tau induced haum txoj kev xav?
Tus qauv tsim kom haum yog thawj zaug los ntawm Koshland hauv xyoo 1958 los piav qhia txog kev hloov pauv ntawm cov protein hauv cov txheej txheem khi. Cov qauv no qhia tau hais tias ib qho enzyme, thaum khi nrog nws cov substrate, optimizes lub interface los ntawm lub cev kev sib cuam tshuam los tsim ib tug complex qauv.
Leej twg nrhiav tau sulfuric acid?
Qhov kev tshawb pom ntawm sulfuric acid tau lees paub rau 8th caug xyoo alchemist Jabir ibn Hayyan. Sulfuric acid ua ntej li cas? Nyob rau xyoo pua 17th, German-Dutch chemist Johann Glauber tau npaj sulfuric acid los ntawm kev hlawv sulfur ua ke nrog ntsev (potassium nitrate, KNO 3 ), nyob rau hauv lub xub ntiag ntawm chav.
Ribosomal rna nyob qhov twg?
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?
Leej twg tau spayed thiab leej twg tau txais neutered?
Kev npam tus dev hais txog kev tshem tus poj niam dev lub cev xeeb tub, hos neutering yog hais txog cov txheej txheem uas ua rau txiv neej. Thaum tus poj niam tus dev tau spayed, tus kws kho tsiaj tshem nws zes qe menyuam thiab feem ntau nws lub tsev menyuam thiab.
Puas nrhiav tau lossis nrhiav tau?
Yog li, koj yuav tsum tau siv "could find". Lub modal verb, tau yog twb nyob rau hauv nws paste-form: ua. Yog li koj tsis tas yuav hloov pauv los nrhiav. Yuav nrhiav tau lossis nrhiav tau? "Ntaus" yog sib npaug. "
