TLS Online TPP Program

#Question id: 2205


Amino acid entry into cells can occur via uniporters or symporters. If the rate of leucine entry into the cell increases when the pH decreases, this suggests:

#Unit 2. Cellular Organization
  1. leucine is being transported by a uniporter.

  2. leucine is being actively pumped across the membrane against its concentration gradient.

  3. leucine is being transported by a H+ symporter.

  4. leucine is crossing the membrane via simple diffusion.