Qhov sib txawv tseem ceeb ntawm coacervates thiab protobionts yog cov coacervates yog cov macromolecular aggregates bounded los ntawm ib daim nyias nyias thaum protobionts, uas yog cov precursors rau lub neej thaum ntxov, yog microspheres tsim ntawm inorganic thiab organic molecules ncig los ntawm ib tug lipid bilayer membrane.
Coacervates thiab protobionts yog cov qauv ntawm tes, tab sis lawv tsis yog cov qauv nyob. Coacervates yog cov sib sau ua ke ntawm cov khoom siv hluav taws xob. Lawv yog cov membrane-bound, vesicle-zoo li cov qauv. Coacervates tuaj yeem nqus cov khoom los ntawm ib puag ncig thiab loj hlob. Lawv tuaj yeem faib ua cov coacervates tshiab. Protobionts yog aggregates ntawm abiotically tsim molecules ncig los ntawm lipid bilayer membrane. Lawv yog cov precursors rau lub neej thaum ntxov. Qhov tseeb, cov kws tshawb fawb xav tias cov protobionts yog cov evolutionary precursors rau prokaryotic hlwb. Lawv nthuav tawm yooj yim luam tawm thiab cov metabolism. Lawv yog tsim los ntawm cov organic tebchaw.
Coacervates yog dab tsi?
Coacervates yog cov sib sau ua ke ntawm colloidal droplets tuav ua ke los ntawm electrostatic txaus nyiam zog. Lo lus tau siv los ntawm I. A. Oparin. Nws ntseeg hais tias lub neej tsim los ntawm coacervates. Coacervates tsim spontaneously nyob rau hauv cov xwm txheej tsim nyog. Lawv yog cov microscopic spherical aggregates ntawm macromolecules xws li cov proteins, lipids thiab nucleic acids. Lawv nyob ib puag ncig los ntawm lipid membrane thiab tseem muaj cov enzymes. Coacervates tuaj yeem loj hlob los ntawm kev nqus cov molecules los ntawm ib puag ncig. Ntxiv mus, lawv tuaj yeem faib los ntawm budding. Yog li ntawd, coacervates zoo ib yam li cov khoom muaj sia thiab raug suav hais tias yog precursors ntawm hlwb.
Daim duab 01: Coacervates
Cov Protobionts yog dab tsi?
Protobionts yog microspheres tsim los ntawm cov organic thiab inorganic molecules dai hauv lub lipid bilayer. Sab hauv ib puag ncig ntawm cov microspheres yog cais los ntawm ib puag ncig. Lawv tsim spontaneously. Lawv yog cov precursors rau lub neej thaum ntxov. Lawv zoo li cov hlwb yooj yim heev. Cov lipids ntawm daim nyias nyias yog hu ua liposomes, thiab cov liposomes tuaj yeem tswj tau qhov hluav taws xob hla ntawm daim nyias nyias. Protobionts tau tsim dua tshiab los ntawm kev tsim cov liposome microspheres me me. Thaum ib tug self-replicating molecule yog dai nyob rau hauv los yog tsim nyob rau hauv lub protobiont, cov qauv no muaj ntau yam ntxwv ntawm ib tug prokaryote. Cov kws tshawb fawb ntseeg tias cov protobionts no yog thawj cov neeg nyob hauv prokaryotes. Protobionts qhia txog keeb kwm ntawm tus kheej-replicating molecules.
Dab tsi zoo sib xws ntawm Coacervates thiab Protobionts?
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- Coacervates thiab protobionts yog spherical aggregations.
- Ob leeg yog coated nrog lipid membrane.
- Ob leeg zoo li cov hlwb yooj yim heev.
- Tib neeg ntseeg tias lawv yog cov ua ntej ntawm cov hlwb.
- Lawv tsim spontaneously.
- Ob qho tib si coacervates thiab protobionts tsis yog cov qauv nyob, tab sis lawv nthuav tawm cov khoom tseem ceeb xws li cov metabolism, kev loj hlob thiab kev loj hlob.
Qhov txawv ntawm Coacervates thiab Protobionts yog dab tsi?
Coacervates yog cov membrane-bound vesicle-zoo li aggregates ntawm lipid molecules thaum protobionts yog aggregates ntawm abiotically tsim molecules surrounded los ntawm lipid bilayer. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm coacervates thiab protobionts. Oparin ntseeg tias lub neej tsim los ntawm coacervates. Protobionts raug suav hais tias yog qhov precursors rau lub neej thaum ntxov.
Ntxiv mus, coacervates tau ntim nrog ib daim nyias nyias, thaum cov protobionts tau ntim nrog cov lipid bilayer.
Hauv qab no yog cov lus qhia luv luv ntawm qhov sib txawv ntawm coacervates thiab protobionts.
Summary – Coacervates vs Protobionts
Coacervates yog cov kab mob me me uas tshwm sim los ntawm cov kab sib txuas ntawm lipid molecules uas tau tuav ua ke los ntawm electrostatic rog. Oparin ntseeg tias lub neej tsim los ntawm coacervates. Protobionts yog cov sib sau ua ke ntawm cov organic thiab inorganic molecules ncig los ntawm lipid bilayer. Lawv zoo ib yam li cov teeb meem nyob, thiab lawv yog cov precursor rau lub neej thaum ntxov los yog prokaryotic hlwb. Ob qho tib si coacervates thiab protobionts yog cell-zoo li cov qauv, tab sis tsis nyob hauv hlwb. Lawv qhia cov yam ntxwv ntawm lub neej xws li cov metabolism, kev loj hlob thiab kev loj hlob. Coacervates muaj ib daim nyias nyias thaum protobionts muaj lipid bilayer. Yog li, qhov no qhia txog qhov sib txawv ntawm coacervates thiab protobionts.
