With regard to membrane receptors for hormones:
a. they are often glycoproteins
b. they are important for hormones made up of steroid
c. those for insulin exhibit an intrinsic protein kinase activity
d. glucagon uses calcium as a second messenger
a. they are often glycoproteins
b. they are important for hormones made up of steroid
c. those for insulin exhibit an intrinsic protein kinase activity
d. glucagon uses calcium as a second messenger