Hershey and Chase used the 35S isotope to label proteins. How does this isotope differ from the 32S isotope found in greatest natural abundance, and why did they choose 35S instead of 32S? A)35S has more protons than 32S; Hershey and Chase used it because it has a greater mass. B)35S has fewer protons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced. C)35S has more neutrons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced. D)35S has fewer neutrons than 32S; Hershey and Chase used it because it has a smaller mass.

my answer:C

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answer is C

Answer is c

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The correct answer is C) 35S has more neutrons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced.

To explain further, both 35S and 32S are isotopes of sulfur. Isotopes are atoms of the same element that have different numbers of neutrons in their nucleus. The number of protons in an atom determines its atomic number and the number of neutrons determines its atomic mass.

In this case, 35S has more neutrons compared to 32S. The isotope 35S is radioactive, which means its nucleus is unstable and it undergoes nuclear decay, emitting radiation. This property of 35S makes it easy to trace and detect. It allows scientists like Hershey and Chase to track and label molecules, such as proteins, in their experiments.

On the other hand, 32S is the most abundant natural isotope of sulfur, with a stable nucleus. It does not emit radiation and is not useful for tracing or labeling molecules in experiments involving radioactivity.

Therefore, Hershey and Chase chose to use 35S instead of 32S because of its radioactive nature and the ease with which it can be traced in their protein labeling experiments.

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