Why are endocytosis and exocytosis considered active transport?

Related questions

1. How do exocytosis and endocytosis differ from other forms of transport across the cell membrane?
2. What is the force called that causes water to rush into the plant cell?
3. What is the difference between exocytosis and endocytosis?
4. What is an example of a exocytosis?
5. How do the processes of exocytosis and endocytosis differ?
6. What releases dopamine exocytosis?
7. Why is Pinocytosis a form of endocytosis?
8. What is an example of receptor mediated endocytosis?
9. What is achieved by exocytosis?
10. What are the steps of exocytosis?

Tags

1. #transported
2. #endocytosis
3. #since
4. #passively
5. #large
6. #because
7. #membrane
8. #require
9. #transport
10. #moved
11. #across
12. #transporting
13. #material
14. #considered
15. #exocytosis
16. #molecules
17. #active