Which of the following most specifically explains why relay proteins only bind receptor tyrosine kinases (RTK) after activation? a. SH2 domains are only present in the relay proteins after activation
b. SH2 domains in the relay proteins only bind Tyr that has been phosphorylated in the RTK
c. SH2 domains in the relay proteins must be phosphorylated on Tyr to bind RTK
d. SH2 domains in the relay proteins only phosphorylate Tyr in the RTK after activation
e. SH2 domains in the RTK must be phosphorylated on Tyr to bind relay proteins

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.