What are ‘aquaporins’? How does presence of aquaporins affect osmosis

 Aquaporins are integral membrane proteins. These form pores or channels in the membrane. The water can flow more rapidly through these pores to inside of the Cell, as compared to the process of diffusion.
These are plumbing systems of the cells. These selectively conduct water in and out of the cells, while preventing the passage of ions and other solutes.