What Is the Percent (By Mass) of Carbon in Glucose

question 11

Multiple Choice

What is the percent (by mass) of carbon in glucose, C₆H₁₂O₆.

• A) 40.0 %
• B) 53.3 %
• C) 25.0 %
• D) 6.7 %
• E) none of these

---

Definitions:

Thyroid

A gland in the neck that secretes hormones regulating growth and metabolism by controlling the rate of metabolism and the rate at which the body uses energy.

Iodine

A chemical element necessary for thyroid gland function, also used as a disinfectant.

PTH

Parathyroid hormone, a regulator of calcium and phosphorus metabolism in the body.

Calcitonin

A hormone produced by the thyroid gland that helps regulate calcium levels in the blood.