The Radioactive Isotope Carbone-14 Is Used as a Tracer in Medical

question 13

Multiple Choice

The radioactive isotope carbone-14 is used as a tracer in medical and biological research. Compute the half-life of carbone-14 given that the decay constant k is $- 1.2097 \times 10 ^ { - 4 }$ (The units for k here are such that your half-life answer will be in years.) Please round the answer to one decimal place.

• A) 5,728.7years
• B) 5,729.2years
• C) 5,758.5years
• D) 5,730.3years
• E) 5,729.9years

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Definitions:

Carbohydrates

Organic compounds consisting of carbon, hydrogen, and oxygen, typically found in sugars, starches, and cellulose, serving as a major energy source in the diet of animals.

Starches

Complex carbohydrates that are composed of many glucose units joined together, found in foods like potatoes, rice, and wheat.

Energy Nutrients

Nutrients such as carbohydrates, fats, and proteins that provide energy for the body to perform its functions.

Proteins

Large molecules made up of amino acids, essential for the structure, function, and regulation of the body's tissues and organs.