Question

.............. bacterium can withstand the dosage of radiation, which are several times higher than what human cells can tolerate.

• A. Escherichia coli
• B. Conus magus
• C. Deinococcus radiodurans
• D. Staphylococcus aureus

Hint:

\textbf{Deinococcus radiodurans} is a model organism for studying radiation resistance, often used in extremophiles research.

Answer 1

The Correct Option is C

Let's analyze each option:
(1) Escherichia coli: While Escherichia coli is a commonly studied bacterium, it does not have the extreme radiation resistance of Deinococcus radiodurans. Hence, this is not the correct answer.
(2) Conus magus: Conus magus is a species of sea snail, not a bacterium, so it is not the correct answer.
(3) Deinococcus radiodurans: This is the correct answer. Deinococcus radiodurans is well known for its incredible ability to withstand high levels of radiation, several times higher than what human cells can tolerate. It is often referred to as the most radiation-resistant organism on Earth.
(4) Staphylococcus aureus: Staphylococcus aureus is a pathogenic bacterium but does not exhibit the same radiation resistance as Deinococcus radiodurans. Hence, this is not the correct answer.
Conclusion: The correct answer is Option 3: Deinococcus radiodurans, which is capable of surviving radiation doses much higher than those human cells can tolerate.