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A bacterium grown over medium having rad...

A bacterium grown over medium having radioactive `.^(35)S` incorporates radioactivity in

A

Carbohydrates

B

Proteins

C

DNA

D

RNA

Text Solution

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The correct Answer is:
To solve the question regarding the incorporation of radioactive sulfur (35S) by a bacterium, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Components**: - Recognize that the question involves a bacterium grown in a medium containing radioactive sulfur (35S). 2. **Recall Key Experiments**: - Refer to the experiments conducted by Hershey and Chase, which demonstrated how different components of viruses (bacteriophages) are labeled with radioactive isotopes. 3. **Identify the Isotopes Used**: - In their experiments, Hershey and Chase used radioactive sulfur to label proteins and radioactive phosphorus to label DNA. 4. **Analyze the Results**: - The results showed that when bacteriophages were grown in a medium with radioactive sulfur, the sulfur was incorporated into the proteins of the bacteria. Conversely, radioactive phosphorus was found in the DNA. 5. **Connect to the Current Question**: - Since the bacterium in the question is grown in a medium with radioactive sulfur, it will incorporate this sulfur into its proteins, as proteins contain sulfur in their amino acids. 6. **Conclusion**: - Therefore, the bacterium grown in a medium with radioactive 35S will incorporate radioactivity in proteins. ### Final Answer: The bacterium grown over medium having radioactive 35S incorporates radioactivity in **proteins**. ---
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