Which of the following is true about enzymes? A:They increase the activation energy which will speed up product production

B:They lower activation energy which will speed up product production.

C:They are checkpoints to make sure the reaction is going smoothly.

D:They decrease the speed of the reaction to make sure that errors are not made.

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.