Cov hlwb zoo sib xws li cas?
Cov hlwb zoo sib xws li cas?

Video: Cov hlwb zoo sib xws li cas?

Video: Cov hlwb zoo sib xws li cas?
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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: