Question

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? (1 point)

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

Answer 1

@Abhisar

Answer 2

Hey there!
What do you think it should be?

Answer 3

maybe C ? but i really don't know

Answer 4

Yes that's correct. Isotopes are elements which have same atomic number (which means same number of protons) but different mass numbers (mass number=number of proton+number of neutron). Thus Isotopes basically differ in the number of neutrons. Atomic number of sulphur is 16, so 32S isotope has 16 protons and 16 neutrons (32-16) and 35S isotope has again 16 protons and 19 neutrons (35-16).

Answer 5

Also 35S isotope is radioactive in nature.

Answer 6

Got it?

Answer 7

Radioactive isotopes can easily be traced because of their radioactivity...