Tam sim no, enzymes TSIS ua rau cov tshuaj tiv thaiv tsis yog tus kheej. Txawm li cas los xij, enzymes ua kom nrawm nrawm ntawm cov tshuaj tiv thaiv tus kheej. Yeej, lawv ua kom cov tshuaj tiv thaiv sai dua. Enzymes ua qhov no los ntawm kev txo qis kev ua kom lub zog ntawm cov tshuaj tiv thaiv.
Puas cov tshuaj tiv thaiv tus kheej xav tau enzymes?
Nws yog ib qho tseem ceeb kom nco ntsoov tias enzymes tsis hloov txawm tias qhov tshuaj tiv thaiv yogexergonic (spontaneous) lossis endergonic. Qhov no yog vim lawv tsis hloov lub zog dawb ntawm cov reactants lossis cov khoom. Lawv tsuas yog txo qhov ua kom lub zog xav tau rau cov tshuaj tiv thaiv mus tom ntej (Daim duab 1).
Puas cov enzymes tso cai rau cov tshuaj tsis tshwm sim tshwm sim?
Enzymes (thiab lwm yam catalysts) tsuas yog tuaj yeem ua rau txoj hauv kev mus rau qhov sib npaug ntawm qhov ntsuas kub. Lawv tsis hloov cov net thermodynamics. Yog li ntawd, lawv tsis tuaj yeem ua qhov cuam tshuam rov qab los ntawm qhov sib npaug ntawm cov thermodynamic. Enzymes tsis catalyze spontaneous reactions.
Yuav ua li cas thiaj tsis tshwm sim tshwm sim?
Kev tsis txaus siab yog cov tshuaj tiv thaiv uas tsis pom zoo tsim cov khoom ntawm cov txheej txheem muab. Txhawm rau kom cov tshuaj tiv thaiv tsis ua raws li kev xav, nws yuav tsum yog endothermic, nrog rau kev txo qis hauv entropy, lossis ob qho tib si. … Hmoov zoo, qhov tshuaj tiv thaiv no tsis ua raws li qhov kub thiab txias.
Yuav ua li cas yog qhov kev tawm tsam tsis yog tshwm sim?
Tsuas yog vim qhov tshwm sim tsis tshwm sim tsis txhais tau tias tsis uatshwm sim txhua. Xwb, nws txhais tau hais tias cov reactants yuav tau txais kev pom zoo tshaj cov khoom ntawm qhov sib npaug, txawm tias qee cov khoom yuav muaj tseeb.
