which of the following is a key difference between DNA and RNA?

Question

a DNA is a single stranded, well DNA is a double stranded
b DNA is typically found in the cytoplasm while RNA is found in the nucleus
c DNA contains thymine, while RNA contains uracil
d DNA uses ribsSome sugar uses deoxyribose sugar

Answer 1

The key difference between DNA and RNA from the options provided is:

c DNA contains thymine, while RNA contains uracil.

Additionally, for clarification:

• Option a is incorrect because DNA is double-stranded, while RNA is typically single-stranded.
• Option b is incorrect; DNA is primarily located in the nucleus, while RNA is found in both the nucleus and the cytoplasm.
• Option d has a typographical error and is incomplete, but if it meant to say "DNA uses deoxyribose sugar, while RNA uses ribose sugar," then that would also be correct. However, option c specifically highlights a more distinctive difference.

Therefore, the best answer among the choices provided is c.