Lesson 2: DNA and RNA Structure

Question 1

Which represents a strand of RNA bases?

Revolt · Accepted Answer

UGGCUCGAA

Question 2

What is the role of RNA?

Revolt · Accepted Answer

to move information from the nucleus to the ribosomes for protein synthesis

Question 3

DNA is a nucleic acid polymer composed of which repeating structural unit?

Revolt · Accepted Answer

nucleotides

Question 4

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?

Revolt · Accepted Answer

ribose

Question 5

Proteins are made in ribosomes, but DNA is stored in the nucleus. How does RNA help in this process?

Revolt · Accepted Answer

RNA copies DNA and transports it to ribosomes for protein synthesis.

Question 6

Which base is found only in RNA?

Revolt · Accepted Answer

uracil

Question 7

What did Chargaff discover while studying bases in the DNA of organisms?

Revolt · Accepted Answer

The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.

Question 8

A single strand of DNA helix has the code ATAGGC. Which would be the complementary code on the other strand of the helix?

Revolt · Accepted Answer

TATCCG

Question 9

Which structural characteristic is seen in RNA but not in DNA?

Revolt · Accepted Answer

a single strand

Question 10

Which discovery is attributed to Phoebus Levene?

Revolt · Accepted Answer

identification of ribose and deoxyribose

Lesson 2: DNA and RNA Structure Answers