Which statements about the proteins and glycoproteins in cell surface membranes are correct? 1
They can allow cells to bond together to form tissues.
They can recognise messenger molecules like hormones.
2
3
They can be antigens and allow cell to cell recognition.
A
1, 2 and 3
B
1 and 2 only
С
1 and 3 only
2 and 3 only
D