Her2 is a receptor tyrosine kinase. in 30 percent of human breast cancers, her2 is permanently activated, resulting in unregulated cell division. lapatinib, a drug used to treat breast cancer, inhibits her2 receptor tyrosine kinase autophosphorylation (the process by which the receptor adds phosphates onto itself), thus reducing tumor growth by 50 percent. besides autophosphorylation, which of the following steps would be inhibited by lapatinib?

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101