The primary difference between a coelom and a pseudocoelom is the primary difference between a coelom and a pseudocoelom is their developmental origin a coelom arises in the ectoderm, and a pseudocoelom arises in the endoderm the manner in which they cushion the internal organs a coelom occurs in triploblastic animals, and a pseudocoelom occurs in diploblastic animals

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.