Substrate txhais
Lub substrate yog ib yam khoom uas koom nrog biochemical cov tshuaj tiv thaiv, uas tuaj yeem yog cov khoom siv tshuaj lom neeg, molecule, lossis compound, thiab cov khoom tuaj yeem tsim los ntawm kev ua. Lub substrate ntawm biochemical cov tshuaj tiv thaiv feem ntau yog cov khoom ntawm lwm cov tshuaj tiv thaiv tib lub sijhawm.