Multiple Choice
Refer to the figure below showing two strands of DNA. Which statement about uracil can you infer to be true?
A) It has a double ring and forms two hydrogen bonds.
B) It has a single ring and forms two hydrogen bonds.
C) It has a double ring and forms three hydrogen bonds.
D) It has a single ring and forms three hydrogen bonds.
E) It has a single ring and forms one hydrogen bond.
Correct Answer:

Verified
Correct Answer:
Verified
Q31: Nucleic acids and proteins are both polymers
Q32: In 1668, Francesco Redi conducted experiments to
Q33: Because it is easy to spot meteorites
Q34: After the discovery that volcanoes released carbon
Q35: Refer to the table below, showing a
Q37: What is the sequence of the complementary
Q38: In 1969, Australian scientists analyzed the structure
Q39: Meteorites from space<br>A) carried cyanobacteria that provided
Q40: Unlike RNA, DNA contains<br>A) cytosine.<br>B) uracil.<br>C) thymine.<br>D)
Q41: According to the principle of complementary base