The covering of the lungs is the _____, and they are located in the _____ cavities.

What is the most abundant substance in the human body?

Digestion breaks down complex molecules into simpler molecules. Select the term that best describes this process.

What is the term for a substance that causes a resistance to a change in pH?

Connective tissue membranes usually consist of _____.

To be considered an organic molecule a substance must contain _____.

Which of the following cover(s) the surfaces of bones?

Drinking a fluid that is hypertonic, like seawater, is likely to do which?

What type of reaction is shown? A + B → AB

The form of carbohydrate our bodies use to store reserve energy is _____.