Technetium-99m is a radioisotope used in a variety of diagnostic ...

[Alainaaa8]

Technetium-99m is a radioisotope used in a variety of diagnostic tests. Technetium-99m has a short half-life (6 hr). The advantage of a short half-life for diagnostic purposes is
 
  A) the radioactivity is easier to monitor.
  B) the radioactivity does not linger in the body.
  C) the radioactivity lasts for a long time.
  D) the chemical reactions induced by the technetium are more rapid.

Question 2

People with red hair have lots of
 
  A) melanin.
  B) phaeomelanin.
  C) chlorophyll.
  D) none of these

[FergA]

Answer to Question 1

B

Answer to Question 2

B

[Alainaaa8]

Thank you!

[FergA]

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