The digestion of pizza, the light reactions in photosynthesis, and the removal of a stain by laundry detergent all require which are biological proteins that lower the activation energy for chemical reactions.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

answer; three;

answerclassical conditioning;