Question

Which of the following statements is a TRUE comparison between RNA and DNA?

Note: This question has "adaptive" scoring.

There will usually be one multiple choice question on every tutorial with "adaptive" scoring. You will be able to try the question again if you initially get it incorrect but there will be a penalty applied for each wrong answer.

Select one:

a. DNA and RNA follow the same base-pairing rules even though there are small chemical differences in their nucleotide structure.

b. RNA is made by polymerases 5’ to 3’ while DNA is made by polymerases in both directions.

c. DNA contains information on how to build a polypeptide while RNA does not.

d. RNA is less stable than DNA because it has U-base pairs and RNA bases cannot participate in complementary base pairing.

Answer 1

Option A is correct

First option is correct because adenine pairs with thymine in DNA and with uracil in RNA and guanine pairs with cytosine in both DNA and RNA.

Second option is incorrect because both RNA and DNA are made up from polymerases acting in 5' - 3' direction.

Third option is incorrect because both DNA and RNA contain information on the building of polypeptide.

Fourth option is incorrect because RNA can participate in complementary base pairing by formation of internal hair pin like structure.

Please rate high.