Question: Binding of the signal molecule to its receptor tyrosine kinase could possibly result in each of t…

Binding of the signal molecule to its receptor tyrosine kinase
could possibly result in each of the following cellular activities,
EXCEPT ____

a. Increased production of signal molecule by the original cell
producing it

b. regulation of metabolic reaction

c. cell growth

d. changes in the uptake of nutrients from the extra cellular
space

Which of the following mutations would most greatly affect the
activity of a receptor tyrosine kinase ?

a. One that affects the kinase catalytic domain

b. One that affects the expression level of receptors

c. One that expand its range of substrate

d. One the duplicates its signal binding site in the
extracellular domain