Qhov sib txawv tseem ceeb ntawm cisternae thiab tubules yog tias cisternae muaj nyob rau hauv qhov ntxhib endoplasmic reticulum (RER) thaum tubules muaj nyob rau hauv lub du endoplasmic reticulum (SER).
Lub endoplasmic reticulum yog lub network ntawm daim nyias nyias nyob hauv lub cell. ER ua haujlwm sib txawv hauv lub xov tooj ntawm tes, suav nrog kev hloov kho thiab txav ntawm cov molecules zoo li cov proteins. Muaj ob hom ER nyob ntawm seb muaj cov ribosomes. Rough endoplasmic reticulum yog hom uas muaj ribosomes. ER yam tsis muaj ribosomes hu ua du endoplasmic reticulum. Cisternae thiab tubules yog ob thaj chaw sib txawv hauv qhov ntxhib endoplasmic reticulum thiab du endoplasmic reticulum, feem.
Cisternae yog dab tsi?
Cisternae yog cov hnab ntim cov hnab ntim cov hnab ntim uas muaj nyob rau hauv ob qho tib si endoplasmic reticulum thiab Golgi apparatus, uas koom nrog hauv ntim thiab hloov pauv cov protein. Cisternae tshwm nyob rau hauv ob hom sib txawv hauv endoplasmic reticulum thiab Golgi apparatus. Nyob rau hauv qhov ntxhib endoplasmic reticulum, cisternae zoo li flattened sacs ntawm ceg, thiab hauv Golgi apparatus, lawv tshwm raws li cov hnab ntim. Lub cytoskeleton ntawm cell muab cov duab rau cisternae. Protein hloov kho thiab ntim khoom yog lub luag haujlwm tseem ceeb ntawm cisternae vim muaj cov ribosomes nyob rau hauv qhov ntxhib endoplasmic reticulum. Tus naj npawb ntawm cisternae stacked hauv Golgi apparatus nyob ntawm hom cell thiab cov kab mob.
Daim duab 01: Cisternae
Cisternae sib txawv los ntawm kev ua haujlwm, qauv, thiab muaj pes tsawg leeg hauv txhua pawg Golgi. Li no, lawv tau muab faib ua peb pawg: cis Golgi network, medial, thiab Trans Golgi network. Thaum cov proteins txav los ntawm cisternae, kev hloov pauv xws li phosphorylation, glycosylation, thiab cleavage tshwm sim, tsim cov kev ua haujlwm sib txawv. Cisternae muaj cov enzymes sib txawv los pab txhawb kev hloov pauv protein thiab coj cov hloov pauv cov proteins mus rau lawv qhov chaw kawg.
Tubules yog dab tsi?
Tubule yog lub tsev tseem ceeb tam sim no nyob rau hauv cov endoplasmic reticulum du, uas tsim cov disc zoo li tubular membrane vesicles. Tubules tam sim no nyob rau hauv lub du endoplasmic reticulum yog koom tes nyob rau hauv lub synthesis thiab cia lipids (phospholipids thiab cholesterol) uas koom nyob rau hauv lub synthesis ntawm tshiab cell membranes.
Daim duab 02: Smooth Endoplasmic Reticulum
Nyob ntawm hom ntawm tes, cov tubules no muaj cov haujlwm sib txawv. Hauv qee hom cell, xws li hauv cov qog adrenal, cov tubules ntawm cov kab mob endoplasmic reticulum koom nrog kev sib txuas ntawm cov tshuaj hormones steroid los ntawm cov cholesterol. Ib yam li ntawd, hauv daim siab, cov enzymes tam sim no nyob rau hauv tubules catalyze detoxification txheej txheem ntawm metabolic pov tseg thiab tshuaj dej-soluble khib nyiab los ntawm kev siv tshuaj. Cov tubules tam sim no nyob rau hauv cov leeg pob txha tam sim no raws li cov txheej txheem tshwj xeeb hu ua sarcoplasmic reticulum, uas ua raws li qhov chaw cia rau calcium ions.
Dab tsi yog qhov zoo sib xws ntawm Cisternae thiab Tubules?
- Cisternae thiab tubules muaj nyob hauv eukaryotic hlwb.
- Ntxiv mus, ob qho tib si nyob rau hauv kev koom tes nrog endoplasmic reticulum.
- Lawv koom nrog hauv kev sib txuas ntawm cov molecules sib txawv.
- Ob lub cisternae thiab tubules muab txoj hauv kev rau kev txav ntawm cov molecules sib txawv mus rau lawv qhov chaw ua ntej.
- Ob leeg koom nrog hauv kev ntim cov khoom sib xyaw lossis hloov cov molecules.
Qhov txawv ntawm Cisternae thiab Tubules yog dab tsi?
Qhov sib txawv tseem ceeb ntawm cisternae thiab tubules yog tias cisternae muaj nyob rau hauv qhov ntxhib endoplasmic reticulum (RER) thaum cov tubules muaj nyob rau hauv lub du endoplasmic reticulum (SER). Ntxiv mus, cisternae tau koom nrog hauv kev ntim khoom thiab kev hloov pauv ntawm cov protein, thaum tubules koom nrog hauv kev sib txuas thiab khaws cia lipids.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm cisternae thiab tubules hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Cisternae vs Tubules
Endoplasmic reticulum yog ib qho tseem ceeb organelle koom nrog ntau lub zog hauv eukaryotic hlwb. Cisternae thiab tubules yog ob thaj chaw sib txawv hauv qhov ntxhib endoplasmic reticulum thiab du endoplasmic reticulum, feem. Qhov sib txawv tseem ceeb ntawm cisternae thiab tubules yog tias cisternae pom nyob rau hauv qhov ntxhib endoplasmic reticulum (RER) thaum tubules pom nyob rau hauv du endoplasmic reticulum (SER).
