21. The endocytosis mechanism is slower than the exocytosis mechanism. 22. Endocytosis is the reverse of exocytosis and can occur in a variety of forms.23. More information is found on endocytosis . org. 24. After endocytosis , pertussis toxin's mechanism is the same as cholera toxin. 25. This interaction decreases APP endocytosis leading to an increase in amyloid-? production. 26. LRP2 functions to mediate endocytosis of ligands leading to degradation in lysosomes or transcytosis. 27. Numb acts as an antagonist for Notch by causing its selective endocytosis and degradation. 28. The proteins cross the apical membrane by endocytosis . 29. Endocytosis : Endocytosis is the process in which cells absorb molecules by engulfing them.30. Endocytosis : Endocytosis is the process in which cells absorb molecules by engulfing them.