Scientists Have Used Glucose Labeled with Carbon-14 in Place of Carbon-12

question 22

Multiple Choice

Scientists have used glucose labeled with carbon-14 in place of carbon-12 to trace the metabolic fate of glucose fed to mice.Relative to carbon-12, which property of carbon-14 is essential in these types of experiments?

• A) Carbon-14 has to be heavier than carbon-12.
• B) Carbon-14 has to have more neutrons than carbon-12.
• C) Carbon-14 has to be safer than carbon-12 for use in animal studies.
• D) Carbon-14 has to have the same chemical reactivity as carbon-12.
• E) Carbon-14 has to release a certain kind of radiation.

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