Answer:
they have thin membranes to allow diffusion of substance for short distance
they are numerous to increase the surface area of absorption
hope this helps
Researchers have identified specific gene variants in the receptors that detect sweetness: TAS1R2 and TAS1R3. There is also high variation in the detection of bitterness. However, the story is more complicated than sweet taste, as we have 25 receptors that detect different bitter molecules
Me and Rebekah were reading a book while Tiffany and Sam play on the bar.
As I play my favorite songs my friend tells me that we should book a flight to New Jersey for the summer. I was so excited that I jumped off the bar and and yelled omg yes.