Which hormone signals body cells to take in glucose and reduces the level of sugar in the blood?
A) Testosterone
B) Insulin
C) Cortisol
D) Glucagon

Which action is a reflex action. a. asking for coffe in a cold climate b. blinking when light is flashed in the eyes c. drinking water when thirsty. d. swallowing food e. taking an exam

10. which person would be the least effective host for a pathogen? an older person a young athlete a smoker a sick person

What is a radical? a group of atoms that give off radiation a group of atoms that act like one atom a group of ions that have no charge a group of ions that break up during a reaction