T<span>he synthesis of glutamine from glutamic acid requires the </span>production<span> of an activated ... If proteins A and </span>B<span> have complementary surfaces, they may interact to form the .... Energy cannot be created or destroyed, but it can be converted into </span>other<span> ... which are often employed to </span>join two molecules together<span> in ______ </span>reactions<span>.</span>