What must happen before a body cell can begin mitotic cell division

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

The identities of substances are the same before and after which type of change

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.