In a PET Scan a Patient Is Injected with Radioactively

question 73

Multiple Choice

In a PET scan a patient is injected with radioactively labeled glucose.Cancer cells are often in a hypoxic environment,why would this lead to an increase in glucose uptake?

• A)More energy is produced from glucose in hypoxic conditions.
• B)They rely more on glycolysis which is less efficient than oxidative phosphorylation.
• C)They rely more on oxidative phosphorylation which is less efficient than glycolysis.
• D)Enzymes function more efficiently in the absence of oxygen.
• E)Because they require more oxygen to metabolize glucosE.

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