Lub ribosome ua dab tsi?
Lub ribosome ua dab tsi?

Video: Lub ribosome ua dab tsi?

Video: Lub ribosome ua dab tsi?
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Anonim

Thaum lub cell xav tau ua proteins, nws nrhiav cov ribosomes . Ribosomes yog cov protein builders los yog protein synthesizers ntawm tes. Lawv yog zoo li cov neeg tsim kho uas txuas ib qho amino acid ib zaug thiab tsim cov saw ntev.

Nyob rau hauv tas li ntawd, dab tsi proteins ua ribosomes?

Ribosomes yog complexes ntawm rRNA molecules thiab cov proteins , thiab lawv ua tau yuav pom nyob rau hauv electron micrographs ntawm cell. Hauv lub ribosome , rRNA molecules coj cov kauj ruam catalytic ntawm protein ntau synthesis - lub stitching ua ke ntawm amino acids rau ua a protein ntau molecule.

Kuj Paub, ribosomes ua los ntawm dab tsi thiab lawv ua dab tsi? Ribosomes Loj Ribosomes suav nrog ob subunits uas tsim nyog tsim thiab ua haujlwm ua ib qho los txhais cov mRNA rau hauv cov saw hlau polypeptide ntawm cov protein synthesis. Vim lub fact tias lawv yog ua los ntawm ob subunits ntawm qhov sib txawv, lawv yog me ntsis ntev nyob rau hauv lub pob khawm dua nyob rau hauv txoj kab uas hla.

Ib sab saum toj no, ribosomes ua li cas?

A ribosome yog ua tawm ntawm RNA thiab proteins, thiab txhua ribosome muaj ob qhov sib cais RNA-protein complexes, hu ua cov subunits me thiab loj. Hauv eukaryotes, cov ribosomes tau txais lawv cov kev txiav txim rau cov protein synthesis los ntawm cov nucleus, qhov chaw ntawm DNA (genes) tau sau los ua tus xa xov RNAs (mRNAs).

Ob hom ribosomes yog dab tsi?

Muaj ob hom ribosomes , dawb thiab ruaj (tseem hu ua membrane bound). Lawv zoo ib yam nyob rau hauv cov qauv tab sis txawv nyob rau hauv qhov chaw nyob rau hauv lub cell. Dawb cov ribosomes nyob rau hauv lub cytosol thiab muaj peev xwm txav mus thoob plaws hauv lub cell, whereas tsau cov ribosomes yog txuas nrog rER.

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