True or False ANTIBODIES are substances on the surface of bacteria cells that send the immune system into action.

Which of the following types of food would you generally put a demi-glace on? a.poached fish b.beef tenderloin c.cooked asparagus d.chicken lasagna e.vegetable au gratin

Which of these is a feature of audible pedestrian crosswalk signals? o a. pedestrian tracking o b. emergency instructions o c. button location signaling od. responses to voice commands

Which of these is a fact about performance enhancing drugs? a. steroids lack addictive properties. b. steroids use can cause dangerous side effects. c. it is safe to use steroids when working out. d. a person can get in legal trouble for using steroids.