Which cell organelle is responsible for protein synthesis within a cell?

Which gland in the human body is often referred to as the master gland because it controls other endocrine glands?

Which part of the human brain regulates vital involuntary functions such as breathing and heartbeat?

Which vitamin deficiency commonly causes the disease scurvy?

Which type of immunity is gained through vaccination by introducing a weakened or inactivated pathogen?

Which gas is commonly used to fill balloons so that they float in air?