passive transport Archives

Osmosis- definition, types, examples, (Osmosis vs Diffusion)

June 12, 2020 by Anupama Sapkota

Osmosis Definition Osmosis is a biophysical process occurring commonly in biological systems where solvent molecules move across a semi-permeable membrane towards a region of high solute concentration. Figure: Osmosis. Image Source: Open Stax (Rice University) and Biology Online. It is a type of passive transport and is directed towards the direction that tends to equalize the solute concentration across a …

18 differences between active transport and passive transport

July 20, 2020April 10, 2020 by Sagar Aryal

Active and Passive Transport Definition Active and passive transport are the two main biological process which plays an important role in supplying nutrients, water, oxygen, and other essential molecules to cells and also by removing waste products. Both active and passive transport works for the same cause, but with different movement. Active transport requires chemical energy because it is the …

Passive Transport

January 8, 2020November 24, 2019 by Sagar Aryal

Passive Transport Plasma membranes must allow certain substances to enter and leave a cell, and prevent some harmful materials from entering and some essential materials from leaving. In other words, plasma membranes are selectively permeable—they allow some substances to pass through, but not others. If they were to lose this selectivity, the cell would no longer be able to sustain itself, …