What do you understand by the following terms a] osmosis b]diffusion c] active transport

Osmosis : a diffusion of a solvent (most of the time water molecules) through a membrane that is semipermeable in a area that is low solute concentration to an area of high solute concentration  

Diffusion : A net passive motion of particles (atoms, ions, or molecules) from a section which they are higher in concentration compared to areas in lower concentration.  It goes on until the concentration is all the same.

Active Transport : The motion  of ions or molecules along a cell membrane in the direction opposite of the diffusion or  from an area of lower concentration to one of higher concentration. Active transport needs the assistance of a certain protein known as a carrier protein which uses energy supplied by ATP.

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

the answer is golgi apparatus