Video: Dab tsi yog qhov tseeb ntawm thaj chaw saum npoo rau qhov sib piv ntawm cov kab mob nyob?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Raws li qhov loj me ntawm ib kab mob nce, nws thaj tsam thaj tsam rau qhov ntim piv txo. Qhov no txhais tau tias nws muaj tsawg dua thaj chaw saum npoo muaj rau cov tshuaj kom diffuse los ntawm, yog li tus nqi ntawm diffusion yuav tsis ceev txaus kom ua tau raws li nws cov kev xav tau ntawm cov hlwb.
Ib yam li ntawd, koj tuaj yeem nug, vim li cas thaj chaw thaj tsam rau qhov ntim qhov sib piv tseem ceeb hauv biology?
Qhov chaw thaj tsam rau qhov ntim piv yog tseem ceeb vim tias, raws li lub hnub nyoog ntawm tes thiab tsim cov khoom tseem ceeb xws li cov proteins nws loj tuaj. Qhov loj dua thaj chaw saum npoo , ntau npaum yog kev thauj mus los ntawm cov molecules los ntawm cell membrane.
Ib yam li ntawd, thaj chaw saum npoo cuam tshuam li cas rau ntim? Qhov chaw saum npoo yog npaum li cas cheeb tsam ntawm cov khoom raug nthuav tawm rau sab nraud. Cov ntim yog qhov chaw ntau npaum li cas hauv cov duab. Cov nto - cheeb tsam -rau- ntim ratio qhia koj npaum li cas thaj chaw saum npoo muaj ib tug unit ntawm ntim . Yog tias koj muab cov lej, ces koj tsuas yog faib cov thaj chaw saum npoo tus lej ntawm cov ntim tus lej.
Tsis tas li ntawd, thaj tsam ntawm thaj tsam rau qhov ntim piv hauv biology yog dab tsi?
Thaum ib qho khoom / cell me me, nws muaj qhov loj thaj tsam thaj tsam rau qhov ntim piv , thaum ib yam khoom loj / cell muaj me me thaj tsam thaj tsam rau qhov ntim piv . Thaum lub cell loj hlob, nws ntim nce ntawm tus nqi ntau dua li nws thaj chaw saum npoo yog li ntawd nws yog SA: V piv txo.
Qhov chaw nyob hauv biology yog dab tsi?
Qhov ratio ntawm cov thaj chaw saum npoo thiab ntim ntawm cell thiab kab mob muaj kev cuam tshuam loj heev rau lawv biology , nrog rau lawv cov physiology thiab tus cwj pwm. Cells tuaj yeem ua tiav qhov siab thaj chaw saum npoo rau volume ratio nrog elaborately convoluted nto , zoo li cov microvilli hauv cov hnyuv me.
Pom zoo:
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm lub voos xwmfab?
Rau qhov cubes me dua qhov no, thaj chaw saum npoo yog ntau dua piv rau qhov ntim ntau dua li nws nyob hauv qhov loj dua (qhov ntim ntau dua piv rau thaj chaw saum npoo). qhia meej meej tias raws li qhov loj ntawm ib yam khoom nce (tsis hloov pauv), qhov piv txwv no txo qis
Dab tsi yog qhov hloov pauv kev sib raug zoo ntawm ntim thiab thaj chaw saum npoo raws li qhov khoom loj dua?
Raws li lub voos xwmfab loj zuj zus los yog lub xov tooj ntawm tes tau loj dua, ces thaj tsam ntawm qhov ntim rau qhov sib piv - SA: V piv txo. Thaum ib yam khoom / cell me me, nws muaj thaj tsam loj rau qhov ntim piv, thaum lub khoom loj / cell muaj thaj tsam me me rau qhov ntim piv
Qhov txawv ntawm thaj chaw saum npoo thiab thaj tsam sab nraud yog dab tsi?
Qhov chaw sab nraud yog thaj tsam ntawm txhua sab tsis suav nrog thaj tsam ntawm lub hauv paus. Tag nrho qhov chaw ntawm cov khoom yog qhov sib npaug ntawm thaj chaw ntawm tag nrho cov ntsej muag ntawm cov khoom
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm ib lub sphere?
Rau ib tug kheej kheej, qhov chaw saum npoo yog S = 4 * Pi * R * R, qhov R yog lub vojvoog ntawm tus kheej thiab Pi yog 3.1415 Qhov ntim ntawm ib puag ncig yog V = 4 * Pi * R * R * R / 3. Yog li rau ib tug kheej kheej, qhov sib piv ntawm thaj chaw rau ntim yog muab los ntawm: S / V = 3 / R
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias