Video: Ib qho piv txwv ntawm kev sib koom tes hauv biology yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Classic piv txwv suav nrog predator-prey, host-parasite, thiab lwm yam kev sib raug zoo ntawm cov tsiaj. Ib piv txwv yog cov kev sib koom tes ntawm flowering nroj tsuag thiab txuam pollinators (piv txwv li, muv, noog, thiab lwm yam kab).
Kuj paub yog, dab tsi yog coevolution hauv biology?
Hauv biology , kev sib koom tes tshwm sim thaum ob lossis ntau hom reciprocally cuam tshuam rau ib leeg txoj kev hloov pauv los ntawm cov txheej txheem ntawm kev xaiv ntuj. Charles Darwin tau hais txog kev hloov pauv hloov pauv ntawm cov nroj tsuag paj thiab kab hauv On the Origin of Species (1859).
Tsis tas li ntawd, mimicry yog ib qho piv txwv ntawm kev sib koom tes li cas? Kev sib hloov yog: Evolution nyob rau hauv ob los yog ntau tshaj evolutionary entities coj los ntawm reciprocal xaiv los ntawm cov chaw. Mimicry , rau piv txwv muaj peev xwm coevolutionary , tuaj yeem yog: parasite / host kev sib cuam tshuam (hauv Batesian kev ua yeeb yam ) los yog kev sib nrig sib pab (Müllerian kev ua yeeb yam ).
Ib yam li ntawd, coevolution tshwm sim li cas?
Lub sij hawm kev sib koom tes yog siv los piav txog cov xwm txheej uas ob (lossis ntau dua) hom reciprocally cuam tshuam rau ib leeg txoj kev hloov pauv. Kev sib hloov zoo li yuav tshwm sim thaum sib txawv hom muaj kev sib raug zoo ecological kev sib raug zoo nrog ib leeg. Cov kev sib raug zoo ntawm ecological muaj xws li: Predator/prey and parasite/host.
Dab tsi yog qhov txawv ntawm evolution thiab coevolution?
Kev sib hloov yog cov evolution nyob rau hauv ob los yog ntau hom nyob rau hauv uas lub evolutionary kev hloov ntawm txhua hom cuam tshuam rau evolution ntawm lwm hom. Hauv lwm lo lus, txhua hom exerts xaiv pressures rau, thiab evolved nyob rau hauv teb rau, lwm hom. Naomi Pierce muab ib tus account ntawm kev sib koom tes.
Pom zoo:
Ib qho piv txwv ntawm kev sib txawv ntawm tes yog dab tsi?
Cov txheej txheem thiab cov kauj ruam ntawm Cell Differentiation Ib lub xovtooj ntawm tes muaj peev xwm sib txawv rau txhua hom cell hu ua 'totipotent'. Piv txwv ntawm cov qia thiab progenitor hlwb muaj xws li: Hematopoietic Stem Cells - Cov no yog los ntawm cov pob txha pob txha thiab koom nrog hauv kev tsim cov qe ntshav liab thiab dawb nrog rau cov platelets
Dab tsi yog ib qho piv txwv ntawm cov khoom sib txuas ntawm kev sib npaug?
Kev rho tawm (Tsis yog Commutative) Tsis tas li ntawd, kev faib, kev sib xyaw ntawm cov dej num thiab cov lej sib npaug yog ob qho piv txwv zoo uas tsis yog kev sib txuas
Kev sib koom siab thiab kev sib txawv hauv biology yog dab tsi?
Evolution yog kev sib koom ua ke ntawm biology. Nws piav txog kev sib koom siab thiab ntau haiv neeg ntawm lub neej. 1) Cov xeeb leej xeeb ntxwv los ntawm cov poj koob yawm txwv piav txog kev sib sau ntawm lub neej. 2) kev sib koom ua ke ntawm lub neej = cov khoom muaj sia sib koom ua ke thiab cov qauv ntawm tes (DNA, RNA thiab cell membrane)
Ib qho piv txwv ntawm kev sib koom ua ke yog dab tsi?
Piv txwv ntawm Cov Txheej Txheem Sib Txuas Cov txiaj ntsig tau zoo yog dov tsib, thiab qhov ntawd tuaj yeem tshwm sim ib zaug siv ib qho tuag. Tag nrho cov txiaj ntsig yog rau, txij li qhov tuag yog 6-sab. Yog li qhov tshwm sim ntawm dov ib tsib yog 1/6. Tag nrho cov txiaj ntsig yog 52 vim tias muaj 52 daim npav hauv ib lub lawj txheem
Ib qho piv txwv ntawm kev sib koom ua ke hauv lub neej txhua hnub yog dab tsi?
Cohesion yog lub sij hawm rau molecules ntawm ib yam khoom ua ke. Ib qho piv txwv zoo tshaj plaws yog dej hlaws rau ntawm qhov chaw hydrophobic. Xav txog dab tsi tshwm sim thaum koj poob ib kawg ntawm ib daim ntawv phuam rau hauv ib khob dej