Question

5. How does mRNA differ from DNA? (1 point)

a. mRNA contains ribose sugars; DNA contains deoxyribose sugars.
b. mRNA contains the base uracil; DNA contains the base thymine.
c. mRNA is single-stranded; DNA is double-stranded.
d. All of the above are correct.

Answer 1

a. True. RNA stands for ribonucleic acid, DNA is deoxyribonucleic acid. So their name sort of gives that away!
b. True. RNA's bases are almost identical to DNA's except for the substitution of Uracil for Thymine.
c. True. RNA typically finds itself in situations where it attaches to a half of a DNA piece. DNA is most often double-stranded except for few situations.

So I think we can see the answer from there... :)

Answer 2

Thank you so so much @AccessDenied (:

Answer 3

You're welcome! :)

Answer 4

all of the above are true....but it s not always the case where u have single stranded rna ....u have some secondary and tertiary modifications...the main diff btwn rna and dna as u have asked is definitely the uracil base...thymine is the methylated at 5 th position .....this methylation makes dna stable...