During what process does a molecule such as glucose use a protein channel to cross through a cell membrane?
During what process does a molecule such as glucose use a protein channel to cross through a cell membrane? Gosh, I hate Biology!
- 1 decade agoFavorite Answer
oh, don't hate Biology - it's very cool. Basically, glucose can't get across a membrane because glucose is POLAR (likes water) and the core of a membrane is NONPOLAR. So it's like trying to get water to cross a boundry of oil. So, a protein channel is like a gate that is put into the membrane to allow glucose to pass through the gate and get across the membrane. This is called facilitated diffusion. It's facilitated (helped) by the presence of the channel because otherwise it wouldn't be able to get across. It's diffusion because in the glucose automatically will move from a location of higher concentration (more glucose) to lower concentration (less glucose). So, my guess is that the answer you are looking for is....facilitated diffusion.
- spikegirl9999Lv 51 decade ago