Which of these are advantages of lowering the activation energy? (2 Points)
It allows chemicals to react that otherwise wouldn't
it allows reactions to proceed at an acceptable temperature
It allows reactions to proceed more quickly
it changes the optimum pH of the enzyme

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

answer: wheres the options

explanation:

i believe the answer is a or 1

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.