Video: Cell GCSE yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsiaj txhu yog tsim los ntawm hlwb . Cov no hlwb yog eukaryotic. Qhov no txhais tau tias lawv muaj cov nucleus thiab lwm cov qauv uas nyob ib puag ncig los ntawm daim nyias nyias. Ib yam khoom zoo li jelly uas muaj cov khoom noj uas yaj thiab ntsev thiab cov qauv hu ua organelles. Nws yog qhov chaw uas muaj ntau yam tshuaj lom neeg tshwm sim.
Hais txog qhov no, cell yog dab tsi?
Cells yog lub hauv paus tsev thaiv ntawm txhua yam muaj sia. Tib neeg lub cev yog tsim los ntawm trillions ntawm hlwb . Lawv muab cov qauv rau lub cev, noj cov as-ham los ntawm cov zaub mov, hloov cov as-ham rau hauv lub zog, thiab ua haujlwm tshwj xeeb. Cells muaj ntau qhov chaw, txhua qhov muaj qhov sib txawv.
Tsis tas li ntawd, lub xov tooj ntawm tes thiab kev ua haujlwm yog dab tsi? Cell Parts thiab Functions
| A | B |
|---|---|
| Vacuoles | Loj cia sacks pom nyob rau hauv cov nroj tsuag |
| Cell phab ntsa | Cov qauv hauv cov nroj tsuag ua los ntawm cellulose uas nyob sab nraud ntawm lub cell membrane |
| Chromatin | Nyias strands ntawm DNA thiab proteins pom nyob rau hauv lub nucleus ntawm ib tug cell. |
| Cell | Qhov tsawg tshaj plaws ntawm lub neej |
Kuj kom paub yog, dab tsi yog cell yooj yooj yim txhais?
Cov cell (los ntawm Latin cella, lub ntsiab lus "chav me") yog lub hauv paus structural, functional, thiab biological unit ntawm tag nrho cov paub kab mob. A cell yog qhov tsawg tshaj plaws ntawm lub neej. Cells feem ntau hu ua "lub tsev blocks ntawm lub neej". Kev kawm ntawm hlwb hu ua cell biology, cellular biology, los yog cytology.
Lub cell ua los ntawm dab tsi?
A cell yog qhov pib ua ntawm cov khoom siv roj ntsha (proteins, lipids, carbohydrates thiab nucleic acids). Cov biomolecules no yog tag nrho ua los ntawm carbon, hydrogen thiab oxygen. Proteins thiab nucleic acids muaj Nitrogen.
Pom zoo:
Dab tsi yog qhov txawv ntawm tsiaj cell thiab cog cell?
Qhov sib txawv ntawm cov nroj tsuag thiab cov tsiaj hlwb yog tias cov tsiaj txhu feem ntau yog puag ncig thaum cov nroj tsuag feem ntau yog cov duab plaub. Cov nroj tsuag muaj cov phab ntsa tawv tawv uas nyob ib puag ncig cov cell membrane. Tsiaj cell tsis muaj phab ntsa ntawm tes
Ob qhov tseem ceeb ntawm lub voj voog ntawm tes yog dab tsi thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Muaj ob theem tseem ceeb hauv lub voj voog ntawm tes. Thawj theem yog interphase thaum lub cell loj hlob thiab replicates nws DNA. Qhov thib ob yog theem mitotic (M-Phase) thaum lub sijhawm cell faib thiab hloov ib daim qauv ntawm nws cov DNA mus rau ob lub hlwb zoo tib yam
Dab tsi yog 2 qhov tseem ceeb ntawm lub voj voog ntawm tes thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Cov xwm txheej no tuaj yeem muab faib ua ob qhov tseem ceeb: interphase (hauv nruab nrab ntawm kev sib faib theem ua pawg G1 theem, S theem, G2 theem), thaum lub xov tooj ntawm tes tsim thiab ua nrog nws cov haujlwm metabolic; mitotic theem (M mitosis), thaum lub sij hawm lub cell yog replicating nws tus kheej
Lub ntsiab lus ntawm cog cell thiab tsiaj cell yog dab tsi?
Tsiaj Thiab Nroj Tsuag Cell. Txhua yam muaj sia nyob, nroj tsuag lossis tsiaj txhu yog tsim los ntawm cov hlwb. Lub cytoplasm nyob rau hauv ib lub cell muaj chloroplast thiab lwm yam plastids, mitochondria, dictyosomes, ribosomes, du thiab ntxhib endoplasmic reticulum, nucleus thiab lwm yam. Ib tug tsiaj cell yog ntau dua los yog tsawg spherical
Dab tsi yog cell membrane hauv prokaryotic cell?
Prokaryotes thiab eukaryotes yog ob hom cell uas muaj nyob. Tab sis, prokaryotes muaj qee cov organelles nrog rau cov cell membrane, kuj hu ua phospholipid bilayer. Cov cell membrane no kaw lub cell thiab tiv thaiv nws, tso cai rau hauv qee cov molecules raws li qhov xav tau ntawm tes