Thaum maturity twg ntawm cov hauv qab no yog enucleate?

Cov txheej txheem:

Thaum maturity twg ntawm cov hauv qab no yog enucleate?
Thaum maturity twg ntawm cov hauv qab no yog enucleate?
Anonim

Yog li, tom qab kev sib tham peb tuaj yeem hais tias peb cov lus teb yog sieve cells raws li lawv tau enucleated tom qab kev loj hlob. Yog li, kev xaiv 'A' yog qhov kev xaiv raug.

Nws yog Enucleate ntawm maturity?

Sieve tube cell yog enucleate ntawm maturity vim degeneration ntawm nws cov nucleus thaum nws txoj kev loj hlob.

Qhov twg hauv qab no yog Enucleate cell?

neeg laus RBCs yog enucleated. Ua kom tiav cov lus teb: Lub cell tsis muaj nucleus yog hu ua enucleated cell. Cov neeg laus RBC tsis muaj nuclei kom lawv thauj tau oxygen.

Yuav ua li cas cov khoom ntawm cov ntaub so ntswg yog enucleated ntawm maturation?

Pholem (cov ntaub so ntswg nyuaj) yog tsim los ntawm cov hlwb sib koom, phloem parenchyma, phloem fiber thiab sieve tube cells. Sieve tube hlwb yog cylindrical thiab raj - zoo li cov qauv uas koom nrog hauv kev thauj cov organic solute. Nyob rau hauv sieve hlwb nucleus yog tshwm sim nyob rau hauv cov yau tab sis ploj mus nyob rau hauv mature theem.

Yuav ua li cas hauv qab no tsis yog nucleated?

A) Sieve cell is non-nucleated.

Pom zoo:

Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?

Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?

Sodium lauryl sulfate (SLS) yog surfactant feem ntau siv. YPuas yog tshuaj txhuam hniav puas yog surfactant? Surfactants. Ntau, txawm tias tsis yog tag nrho, tshuaj txhuam hniav muaj sodium lauryl sulfate (SLS) lossis lwm yam surfactants (detergents).

Ntawm qhov twg ntawm cov ces kaum hauv qab no yog cov haujlwm cosecant tsis tau txhais?

Ntawm qhov twg ntawm cov ces kaum hauv qab no yog cov haujlwm cosecant tsis tau txhais?

Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm cosecant rau lub kaum sab xis ntawm xoom degrees lossis ib puas yim caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug csc (θ)= 1 / sin θ ) yuav suav nrog kev faib los ntawm xoom.

Thaum lub sijhawm ua pa ntawm tes uas ntawm cov hauv qab no tso tawm los ntawm cov khoom lag luam?

Thaum lub sijhawm ua pa ntawm tes uas ntawm cov hauv qab no tso tawm los ntawm cov khoom lag luam?

Thaum lub sijhawm ua pa aerobic cellular, qabzib reacts nrog oxygen, tsim ATP uas tuaj yeem siv los ntawm tes. carbon dioxide thiab dej yog tsim los ntawm cov khoom lag luam. Hauv kev ua pa ntawm tes, qabzib thiab oxygen hnov qab tsim ATP.

Ib qho ntawm cov hauv qab no yog cov piv txwv ntawm cov lus pom zoo rau huab cua?

Ib qho ntawm cov hauv qab no yog cov piv txwv ntawm cov lus pom zoo rau huab cua?

Cov kws tshawb fawb tau paub txog ntau qhov kev tawm tswv yim zoo hauv kev nyab xeeb. Ib qho piv txwv yog melting ice. Vim tias cov dej khov muaj lub teeb-xim thiab muaj kev cuam tshuam, feem ntau ntawm cov hnub ci uas tsoo nws tau rov qab mus rau qhov chaw, uas txwv qhov kub ntawm qhov nws ua rau.

Ntawm twg ntawm cov ces kaum hauv qab no yog cov haujlwm secant tsis tau txhais?

Ntawm twg ntawm cov ces kaum hauv qab no yog cov haujlwm secant tsis tau txhais?

Qhov tseeb, tus nqi xa rov qab los ntawm kev ua haujlwm secant rau ib lub kaum sab xis ntawm cuaj caum degrees lossis ob puas thiab xya caum degrees yog suav tias yog tsis tau txhais, txij li qhov sib npaug sec (θ)= 1 / cos θ ) yuav suav nrog kev faib los ntawm xoom.