2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ribosomes yog pom 'dawb' hauv cytoplasmlossis khi rau endoplasmic reticulum (ER) los ua ER ntxhib. Nyob rau hauv ib tug mammalian cell yuav muaj li 10 lab ribosomes. Ob peb ribosomes tuaj yeem txuas rau tib lub mRNA strand, cov qauv no hu ua polysome. Ribosomes tsuas muaj nyob ib ntus xwb.
Puas ribosomes ua haujlwm hauv cytoplasm?
Ribosomes tuaj yeem pom ntab hauv cytoplasm lossis txuas rau endoplasmic reticulum. Lawv lub luag haujlwm tseem ceeb yog hloov cov cai caj ces rau hauv cov amino acid ib ntus thiab tsim cov protein polymers los ntawm cov amino acid monomers.
Yuav ua li cas ribosomes mus rau cytoplasm?
Nyob rau hauv lub nucleolus, tshiab ribosomal RNA ua ke nrog cov proteins los tsim cov subunits ntawm ribosome. Cov subunits tshiab tau tsim yog thauj tawm los ntawm lub qhov hws nuclearmus rau cytoplasm, qhov chaw lawv tuaj yeem ua lawv txoj haujlwm.
Puas cytoplasm muaj ribosomes?
Ribosomes yog pom hauv cytoplasm . Lawv muaj kwv yees li 15-20 nm nyob rau hauv txoj kab uas hla thiab muaj xws li ib tug me me (30S) thiab ib tug loj (50S) subunit. Kev koom tes ntawm subunits yuav tsum muaj Mg2+. Ribosomes yog tsim los ntawm 30% ribosomal proteins thiab 70% ribosomal RNA.
Hom ribosomes twg raug tshem tawm hauv cytoplasm?
Muaj ob qhov chaw cytoplasmic: Free ribosomes raug tshem tawm hauv cytosol. Cov kab ribosomes txuas nrogmus rau sab nraud ntawm endoplasmic reticulum. Dawb ribosomes ua cov proteins uas yuav siv rau hauv cytosol. Bound ribosomes ua cov proteins uas yuav xa mus rau lwm qhov.
Pom zoo:
Dab tsi yog ib feem ntawm cov kua dej ntawm cytoplasm?
Cytoplasm, cov khoom semifluid ntawm ib lub xovtooj ntawm sab nraud rau cov ntaub so ntswg nuclear thiab sab hauv mus raucellular membrane, qee zaum piav raws li cov ntsiab lus nonnuclear ntawm protoplasm. Hauv eukaryotes (piv txwv li, cov hlwb muaj cov nucleus), cytoplasm muaj tag nrho cov organelles.
Thaum cytoplasm ntawm lub cell?
Nws yog tsim los ntawm dej, ntsev, thiab proteins. Hauv eukaryotic hlwb, cytoplasm suav nrog tag nrho cov khoom hauv lub cell thiab sab nraum lub nucleus. Tag nrho cov organelles nyob rau hauv eukaryotic hlwb, xws li lub nucleus, endoplasmic reticulum, thiab mitochondria, nyob rau hauv lub cytoplasm.
Puas pom nyob rau hauv cytoplasm ntawm eukaryotic cell?
Tag nrho cov organelles nyob rau hauv eukaryotic hlwb, xws li lub nucleus, endoplasmic reticulum, thiab mitochondria, nyob rau hauv lub cytoplasm. Dab tsi tuaj yeem pom hauv cytoplasm? Cov organelles hauv cytoplasm tseem ceeb heev rau kev saib xyuas ntawm tes.
Thaum lub sijhawm tsim cov cellular kev faib tawm ntawm cytoplasm hu ua?
Cytokinesis (/ˌsaɪtoʊkɪˈniːsɪs/) yog ib feem ntawm cov txheej txheem ntawm tes faib thaum lub sij hawm cytoplasm ntawm ib leeg eukaryotic cell faib ua ob lub hlwb. Cytoplasmic division pib thaum lub sij hawm los yog tom qab lub sij hawm lig ntawm nuclear faib nyob rau hauv mitosis thiab meiosis.
Hom rna twg los ntawm nucleoplasm mus rau cytoplasm?
Messenger RNA (mRNA), molecule hauv cov hlwb uas nqa cov lej los ntawm DNA hauv lub nucleus mus rau qhov chaw ntawm cov protein synthesis hauv cytoplasm (cov ribosomes). hom RNA twg tuaj yeem taug kev hauv cytoplasm? Messenger RNA (mRNA) yog ib leeg-stranded RNA molecule uas yog ntxiv rau ib qho ntawm DNA strands ntawm cov noob.
