Q: The medical condition of edema is also known as:

1. Dropsy
2. Liver spots
3. Hives
4. Narcolepsy

Q: Which part of the ear helps maintain balance?

1. Outer ear
2. Eardrum
3. Semi-circular canal
4. Ear canal

Q: What controls the rate of chemical reactions in your body?

1. Enzymes
2. Carbohydrates
3. DNA
4. Messenger RNA