The concept of receptor affinity does not only apply to the original receptor and ligand. For which of the following pairs of interacting molecules in signal transduction would a change in affinity of one for the other NOT affect how they work in signal transduction?

Question

A) calmodulin / calcium

B) receptor tyrosine kinase / phosphate

C) protein kinase A / cAMP

Answer 1

I think its c

Answer 2

It is B