The diagram illustrates a glycoprotein inserted into the cell surface membrane of a human red blood cell. This glycoprotein forms part of a system of cell surface blood group recognition sites. Which row identifies the function of this glycoprotein and the regions P and Q of the molecule?
- Arole: antigen; region P: amino acids with hydrophobic R groups; region Q: amino acids with hydrophilic R groups in the cell’s cytoplasm
- Brole: carrier; region P: amino acids with hydrophilic R groups; region Q: amino acids with hydrophilic R groups in the cell’s cytoplasm
- Crole: channel; region P: amino acids with hydrophilic R groups; region Q: amino acids with hydrophobic R groups outside the cell
- Drole: receptor; region P: amino acids with hydrophobic R groups; region Q: amino acids with hydrophobic R groups outside the cell