DNA and RNA Structures 100% solved & updated 2024

DNA and RNA
Structures 100%
The diagram shows a nucleic acid in the
shape of a helix.Which sugar is present in the
nucleic acid that is represented in the
diagram?
uracil
thymine
deoxyribose
ribose - answer ribose


Which base is found only in RNA?
ribose
thymine
uracil
deoxyribose - answer uracil


Which of the following could be a nucleotide
of RNA?

, deoxyribose + phosphate group + thymine
deoxyribose + phosphate group + uracil
ribose + phosphate group + thymine
ribose + phosphate group + uracil - answer
ribose + phosphate group + uracil


A single strand of DNA helix has the code
CGCTAA. Which would be the complementary
code on the other strand of the helix?
CGCAUU
TATCGG
ATAGCC
GCGATT - answer GCGATT


What did Chargaff discover while studying
bases in the DNA of organisms?
The bases in the DNA of each organism were
unique.
The ratios of thymine and adenine were
similar, as were the ratios of guanine and
cytosine.
The overall percentages of bases were
different from one organism to the next.