Video: Cov hlwb zoo sib xws li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tag nrho hlwb muaj structural thiab functional zoo sib xws . Cov qauv qhia los ntawm txhua tus hlwb suav a cell membrane, aqueous cytosol, ribosomes, thiab genetic khoom (DNA). Tag nrho cell yog tsim los ntawm tib plaub hom organic molecules: carbohydrates, lipids, nucleic acids, thiab cov proteins.
Nyob rau hauv no hais txog, dab tsi yog txhua hom cell muaj nyob rau hauv?
Txawm tias hlwb muaj ntau haiv neeg, tag nrho cov cell muaj qee qhov chaw hauv feem ntau . Cov khoom muaj xws li plasma membrane, cytoplasm, ribosomes, thiab DNA. Plasma membrane (tseem hu ua cell membrane) yog lub tsho nyias nyias ntawm lipids uas nyob ib puag ncig a cell . Nws muaj cov lus qhia genetic hais tias hlwb xav tau ua cov protein.
Kuj Paub, dab tsi yog cov yam ntxwv ntawm cov hlwb? Tag nrho cov hlwb muaj plaub yam sib xws:
- plasma membrane: ib txheej txheej uas cais lub cell sab hauv los ntawm nws ib puag ncig ib puag ncig.
- cytoplasm: ib tug jelly-zoo li cytosol nyob rau hauv lub cell uas muaj lwm yam cellular Cheebtsam.
- DNA: cov khoom siv ntawm tes.
- ribosomes: qhov twg protein synthesis tshwm sim.
Ua raws li qhov no hauv kev txiav txim siab, dab tsi yog 3 yam cell muaj sib xws?
Tag nrho cov hlwb , xws li prokaryotic lossis eukaryotic hlwb , muaj ob peb feem ntau nta: muaj DNA, plasma membrane, cytoplasm, thiab ribosomes. Yog vim li cas rau nqe lus raug: Tag nrho hlwb nyob rau hauv cov tsiaj txhu muaj peb yam - cytoplasm, DNA, thiab plasma membrane.
Puas yog txhua lub cell muaj DNA?
Ze li txhua cell nyob rau hauv ib tug neeg lub cev muaj tib yam DNA . Feem ntau DNA yog nyob rau hauv lub cell nucleus (qhov twg nws hu ua nuclear DNA ), tab sis ib qho me me ntawm DNA Nws tuaj yeem pom hauv mitochondria (qhov twg nws hu ua mitochondrial DNA los yog mtDNA).
Pom zoo:
Puas yog ob txoj kab sib luag zoo sib xws lossis tsis sib xws?
Yog tias ob qhov sib npaug piav txog kab sib luag, thiab yog li cov kab uas tsis sib tshuam, qhov system yog ywj siab thiab tsis sib haum. Yog hais tias ob qhov sib npaug piav txog tib kab, thiab yog li cov kab uas hla tus lej tsis kawg, lub kaw lus yog nyob ntawm thiab sib xws
Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation
Dab tsi yog 4 qhov zoo sib xws uas txhua lub hlwb sib koom?
Txhua lub hlwb muaj cov qauv thiab kev ua haujlwm zoo sib xws. Cov qauv sib koom los ntawm txhua lub hlwb muaj xws li cell membrane, aqueous cytosol, ribosomes, thiab genetic material (DNA). Txhua lub hlwb yog tsim los ntawm tib yam plaub yam ntawm cov organic molecules: carbohydrates, lipids, nucleic acids, thiab cov proteins
Dab tsi yog qhov zoo sib xws ntawm cov khoom thiab cov khoom sib txuas?
Cov ntsiab lus thiab cov tebchaw yog cov tshuaj homogeneous nkaus xwb thiab lawv muaj qhov sib xyaw tas li thoob plaws. Cov ntsiab lus thiab cov tebchaw tsis tuaj yeem sib cais rau hauv lawv cov khoom sib xws los ntawm kev siv lub cev. Cov tshuaj thiab cov khoom sib tov yog tsim los ntawm cov khoom sib txawv lossis cov atom sib txawv
Vim li cas cov hlwb muaj peev xwm sib txuas lus nrog lwm cov hlwb tseem ceeb?
Cov kev sib cuam tshuam no tso cai rau cov hlwb sib txuas lus nrog ib leeg hauv kev teb rau kev hloov pauv hauv lawv cov microenvironment. Qhov kev muaj peev xwm xa thiab tau txais cov teeb liab yog qhov tseem ceeb rau kev muaj sia nyob ntawm tes. Kev sib cuam tshuam ntawm cov hlwb tuaj yeem ruaj khov xws li cov uas ua los ntawm cov xov tooj ntawm tes