I-Cytoplasm: Ingxenye Ebalulekile Kumaseli
Ekufundweni kwebhayoloji yamaseli, ukuqonda isakhiwo kanye nomsebenzi wamaseli kubalulekile. Esinye sezingxenye ezibalulekile zamaseli yi-cytoplasm. I-Cytoplasm yinto equkethwe ngaphakathi kwe-membrane yamaseli, ngaphandle kwe-nucleus kumaseli e-eukaryotic. Lesi sihloko sihlose ukuhlola i-cytoplasm, sigqamisa imisebenzi yayo kanye nendima yayo ekusebenzeni kwamaseli.
Incazelo ye-Cytoplasm
I-Cytoplasm ingachazwa njengengxenye yeseli eboshwe yi-plasma membrane futhi ezungeze i-nucleus. I-cytoplasm iqukethe izingxenye ezibalulekile ezahlukahlukene, njenge-organelles, i-cytosol, kanye ne-inclusions yamaseli. I-Cytosol iwuketshezi oluyi-semi-fluid olusebenza njengendawo yokusabela kwamakhemikhali kanye nokuthuthwa kwama-molecule ngaphakathi kweseli. Iphinde ibe namaprotheni asiza ekusetshenzisweni kweseli.
Izingxenye ze-Cytoplasmic
1. I-Cytosol: Lena yingxenye ewuketshezi ye-cytoplasm, equkethe amanzi, usawoti, nama-molecule e-organic afana namaprotheni. I-cytosol isebenza njengendawo lapho ama-organelle eseli elenga khona futhi lapho kwenzeka khona ukusabela okuningi kwe-metabolic.
2. Ama-organelle: I-cytoplasm iqukethe nama-organelle abalulekile, ngalinye lawo elinomsebenzi othize. Amanye alawa yilawa:
– I-Mitochondria: Eyaziwa ngokuthi “izindawo zamandla” zeseli, i-mitochondria inesibopho sokukhiqizwa kwe-ATP ngokuphefumula kwamaseli.
– Ama-Ribosome: Adlala indima ekwakhiweni kwamaprotheni, ama-ribosome angatholakala ekhululekile ku-cytoplasm noma anamathele ku-endoplasmic reticulum.
– I-Endoplasmic Reticulum (ER): Yakhiwa izinhlobo ezimbili, i-rough ER kanye ne-smooth ER. I-Rough ER ihilelekile ekwakhiweni kwamaprotheni, kanti i-smooth ER ihlobene nokwakheka kwamafutha kanye nokukhishwa kobuthi emzimbeni.
– I-Golgi Apparatus: Isebenza ekuguqulweni, ekupakishweni, nasekusatshalalisweni kwamaprotheni nama-lipid akhiqizwa yi-ER.
– Ama-Lysosome: Aqukethe ama-enzyme agaya izinto zeseli ezingadingeki noma ezonakele.
– Ama-Peroxisome: Bamba iqhaza ezinqubweni ezithile zokuxiliswa kanye nokukhishwa kobuthi emzimbeni.
3. I-Cytoskeleton: Uhlelo lwemicu yamaprotheni olunikeza iseli ukuma nokusekelwa kwesakhiwo, futhi lusiza ekunyakazeni nasekuthuthweni kwangaphakathi.
4. Ukufakwa Kwamaseli: Ama-granule nezinhlayiya ezahlukahlukene, njenge-glycogen noma amaconsi e-lipid, agcinwa ku-cytoplasm futhi asetshenziswa ngokwezidingo zeseli ze-metabolic.
Imisebenzi ye-Cytoplasm
I-Cytoplasm idlala indima ebalulekile kumaseli enemisebenzi elandelayo:
1. Indawo lapho kwenzeka khona ukusabela kwe-metabolic: Ama-enzyme amaningi ku-cytosol enza kube lula ukusabela okuhlukahlukene kwamakhemikhali njenge-glycolysis, okubalulekile ekuhlinzekeni amandla kumaseli.
2. Ukugcinwa Kwama-Molecular: I-cytoplasm igcina ama-molecule ahlukahlukene adingekayo ekusebenzeni kwamaseli, okuhlanganisa ama-ion, amaprotheni, kanye nezakhamzimba.
3. Ukuthuthwa Kwangaphakathi Kweseli: I-cytoplasm inikeza indlela yokuhamba kwezinto ngaphakathi kweseli ngokusabalala kanye nokuthuthwa kwe-vesicular.
4. Ukulawulwa kwe-pH yeselula: I-cytoplasm isiza ekugcineni ibhalansi ye-acid-base esitokisini ngokuxazulula ukusabela okubandakanya ama-ion e-hydrogen.
5. Ukusabela Emvelweni: I-cytoplasm ivumela amaseli ukuthi aphendule ezinguqukweni zemvelo ngokulawula umsebenzi wama-enzyme kanye nokuthuthwa kwama-molecule.
Indima ye-Cytoplasm kumaseli e-Eukaryotic kanye ne-Prokaryotic
I-cytoplasm idlala indima ebalulekile kokubili kumaseli e-eukaryotic kanye ne-prokaryotic, yize ezinye zalezi zindima zihluka phakathi kwezinhlobo ezimbili zamaseli.
– Amaseli e-Eukaryotic: Kumaseli e-eukaryotic, i-cytoplasm ihlanganisa i-cytosol, ama-organelle, kanye ne-cytoskeleton edlala indima ekusekeleni nasekusizeni imisebenzi efana nokuhlanganiswa kwamaprotheni, ukukhiqizwa kwamandla, kanye nokuhamba kwamaseli.
– Amaseli e-Prokaryotic: Amaseli e-Prokaryotic, njengebhaktheriya, awanawo ama-organelle aboshwe yi-nucleus noma i-membrane, ngakho-ke i-cytoplasm idlala indima eqondile kuyo yonke imisebenzi yamaseli. Izinqubo ezifana nokuphindaphindwa kwe-DNA, ukuqoshwa, kanye nokuhumusha zenzeka ku-cytoplasm.
Umphumela Wezinto Ezingajwayelekile Ku-Cytoplasm
Ukungahambi kahle ekwakhiweni noma emsebenzini we-cytoplasm kungaholela ezifweni ezahlukahlukene. Isibonelo, ukungalingani ekusatshalalisweni kwama-ion nama-molecule e-organic ku-cytoplasm kungathinta i-osmoregulation kanye nokuxhumana kwamaseli, okungase kuholele ezimweni ze-pathological ezifana nomdlavuza, isifo sikashukela, kanye nezinkinga ze-neurodegenerative.
Ucwaningo Nokusungula Izinto Ezintsha Okuhlobene Ne-Cytoplasm
Ocwaningweni lwe-biotechnology, i-cytoplasm iwukugxila ekuthuthukiseni amasu okuphatha izakhi zofuzo kanye nokwelashwa kwamaseli. Isibonelo, ukulethwa kwezakhi zofuzo noma ama-molecule okwelapha ngomjovo we-cytoplasm kuyindawo ethembisayo yokwelapha izifo zofuzo kanye nomdlavuza.
Isiphetho
I-cytoplasm iyisici esibalulekile samaseli, ekhonza imisebenzi eyinkimbinkimbi nenezici eziningi, kusukela ekwenzeni lula ukusabela kwamakhemikhali kuya ekusekeleni ukunyakaza kwamaseli nokuzivikela. Ukuqonda okujulile nge-cytoplasm akubalulekile nje kuphela ku-biology yamaseli kodwa futhi kunemiphumela ebanzi ocwaningweni lwezokwelapha kanye ne-biotechnology. Intuthuko yesikhathi esizayo ezifundweni ze-cytoplasm kulindeleke ukuthi inikeze ukuqonda okusha kokuthuthukisa ubuchwepheshe bezempilo kanye nokwelashwa kwamaseli.
