2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub melting kub txawv rau cov proteins sib txawv, tab sis kub siab tshaj 41 ° C (105.8 ° F) yuav rhuav tshem cov kev sib cuam tshuam hauv ntau cov proteins thiab ua rau lawv. Qhov ntsuas kub no tsis yog siab dua li lub cev kub ib txwm (37 ° C lossis 98.6 ° F), yog li qhov tseeb no qhia tau tias ua npaws txaus ntshai npaum li cas.
Cov proteins twg tuaj yeem ua kom sov tau?
Feem ntau cov proteins yog denatured los ntawm kev kho cua sov, thiab cov txheej txheem feem ntau yog irreversible. Txawm li cas los xij, qee cov proteins, xws li hyperthermophilic proteins paub tias ruaj khov txawm tias kub kub ntawm dej.
Yuav ua li cas cov protein denatured nyob rau hauv siab?
Heat tuaj yeem siv los cuam tshuam hydrogen bonds thiab tsis yog-polar hydrophobic kev cuam tshuam. Qhov no tshwm sim vim tias tshav kub ua rau lub zog kinetic thiab ua rau cov molecules vibrate sai heev thiab ua rau cov ntawv cog lus cuam tshuam. Cov proteins hauv qe denature thiab coagulate thaum ua noj.
YPob proteins denature ntawm 40 degrees?
Lub pib kub yog kwv yees li 40 degrees C, tab sis qee qhov kev hloov pauv tuaj yeem txuas ntxiv mus qis li 37-38 degrees C. Ntxiv rau kev ua raws li cov teeb liab tseem ceeb rau kev sib txuas ntawm cov protein ua kom sov., qhov tsis ua haujlwm ntawm cov protein tseem ceeb tuaj yeem ua rau cell tuag.
Puas yog cov proteins uas muaj qhov kub thiab txias?
Proteins undergo txias thiab kub denaturation, tab sis feem ntau txias denaturation tsis tuaj yeem ua taukuaj pom vim nws tshwm sim ntawm qhov kub thiab txias hauv qab dej khov. Proteins tab tom nrhiav tau txias thiab kub denaturation yield ib tug txhim khu kev qha nkhaus ntawm protein stability.
Pom zoo:
Ntawm qhov ntsuas kub ntawm qhov ntsuas kub emf yuav yog?
Thermo emf nce mus rau qhov siab tshaj plaws ntawm qhov kub thiab txias (θ ) hu ua nruab nrab kub thiab maj mam txo thiab nws thiaj li ua zero ntawm qhov kub (θ 1) hu ua inversion temperature. Tshaj li qhov kub ntawm inversion, Thermo emf hloov kos npe thiab tom qab ntawd nce.
Vim li cas qhov kub hnyiab ntawm qhov chaw muaj kev phom sij?
Circumferential tag nrho-thickness kub hnyiab nrog qhov ua rau poob ntawm daim tawv nqaij elasticity tuaj yeem tsim cov nyhuv tourniquet ntawm nqua thiab pob tw, uas tuaj yeem ua rau muaj kev cuam tshuam ntawm qhov chaw perfusion, kev ua pa ntawm txoj hlab pas, thiab ua pa tsis zoo.
Ntawm qhov kub thiab txias npaum li cas snowfall tshwm sim?
daus cov ntaub ntawv thaum lub atmospheric kub ntawm lossis qis dua(0 degrees Celsius lossis 32 degrees Fahrenheit) thiab muaj qhov tsawg kawg nkaus ntawm cov dej noo hauv huab cua. Yog hais tias av kub los yog qis dua, cov daus yuav ncav cuag hauv av.
Qhov kub npaum li cas ua rau lub qhov muag qe qe?
Txiv neej walleye txav mus rau hauv qhov chaw yug menyuam thaum lub caij nplooj ntoo hlav thaum dej kub tsuas yog ob peb degrees siab tshaj qhov khov. Cov poj niam loj tuaj txog tom qab. Kev yug me nyuam nce mus txog qhov siab tshaj plaws thaum dej kub ntawm 42 txog 50 degrees.
Ntawm qhov kub npaum li cas ua fescue nres?
Dormancy tuaj yeem tshwm sim hauv Tall Fescue cuam tshuam kev loj hlob thaum kub poob qis dua 50 °. Hauv lwm lo lus, Tall Fescue yuav tsum tsis txhob loj hlob thaum dormancy tshwm sim. Kuj yuav tsum paub tias Frost, daus thiab qhov kub tsis ntev los no tuaj yeem ua rau koj cov nyom siab Fescue.
