Which one of the following statements accurately describes an enzymes?

I had Unpretected sex 3 days before my regular period came aroundand its been 4 days that i missed it am i pregnant How Soon can i know if i am? Is malic acid gluten free? Can you go to work with whooping cough? What is the most serious hazard of wounds? Can a woman with FASD give birth to normal child? What level of bilirubin is lethal? Can thyroid problems cause anxiety attack? The neural connections that the brain keeps are strengthened by a process called what? Who discovered bursitis? What is wrong if it hurts when you pee and discharge keeps coming out? What could it be if your voice is hoarse but your throat doesn't hurt? Can sinus infection cause teeth chattering? What type of blood vessel lets gases and food move in and of the blood? What are the advantages of blood group o positive? Can you have a miscarriage when you are 2 weeks pregnant? Can you work out with weights after total knee replacement? What is the consequences for the umbilical cord not to have 3 vessel cords? Can cervix be high and firm in early pregnancy? What is bridging periportal congestion of the liver? What does an asthma pump do?