Final answer:
When fast-growing microbes are supplied with radioactive amino acids, the proteins they synthesize and the microbes themselves would become radioactive. This Radioactivity would also likely pass on to their offspring.
Step-by-step explanation:
In an experiment where fast-growing microbes are supplied with a medium containing radioactive amino acids, anything the microbes build using those amino acids would become radioactive. This is due to the fact that the microbes use the amino acids as building blocks to form proteins.
So, the proteins that these microbes synthesize would be radioactive because they are produced from the incorporated radioactive amino acids.
Also, the microbes themselves will become radioactive since their body structures and other metabolic elements consist of these synthesized proteins. Therefore, if the microbes reproduce, their offspring would likely be radioactive as well.
Learn more about Radioactive Amino Acids