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Quiz about Structure of DNA
Quiz about Structure of DNA

Structure of DNA Trivia Quiz


What do you know about the basic structure of DNA?

A multiple-choice quiz by Cher40. Estimated time: 3 mins.
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Author
Cher40
Time
3 mins
Type
Multiple Choice
Quiz #
268,841
Updated
Dec 03 21
# Qns
10
Difficulty
Average
Avg Score
7 / 10
Plays
5373
Awards
Top 20% Quiz
Last 3 plays: Guest 93 (3/10), Guest 161 (9/10), Guest 88 (9/10).
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Question 1 of 10
1. The structural shape of DNA is, of course, the famous double helix. What is a "double helix"? Hint


Question 2 of 10
2. DNA is constructed of repeating units. What are these units called? Hint


Question 3 of 10
3. In DNA, to what base does adenine bond? Hint


Question 4 of 10
4. What bases are called purines? Hint


Question 5 of 10
5. To whom is the discovery of the structure of DNA credited? Hint


Question 6 of 10
6. What part of DNA is found at the centre of the molecule? Hint


Question 7 of 10
7. Weak hydrogen bonds are found between which molecules in DNA? Hint


Question 8 of 10
8. What process is used to copy DNA to produce another identical strand? Hint


Question 9 of 10
9. To what molecule is the nitrogen base attached in a nucleotide? Hint


Question 10 of 10
10. What kind of sugar is found in DNA? Hint





Most Recent Scores
Oct 29 2024 : Guest 93: 3/10
Oct 28 2024 : Guest 161: 9/10
Oct 28 2024 : Guest 88: 9/10
Oct 25 2024 : Guest 161: 9/10
Oct 25 2024 : Guest 161: 10/10
Oct 25 2024 : Guest 161: 9/10
Oct 25 2024 : Guest 161: 10/10
Oct 25 2024 : Guest 161: 10/10
Oct 25 2024 : Guest 161: 8/10

Score Distribution

quiz
Quiz Answer Key and Fun Facts
1. The structural shape of DNA is, of course, the famous double helix. What is a "double helix"?

Answer: Two spirals, like a twisty ladder

The double helix shape of DNA is two spirals, resembling a twisted ladder, or two spring coiled together.
2. DNA is constructed of repeating units. What are these units called?

Answer: Nucleotides

A nucleotide consists of a nitrogen base, a sugar, and a phosphate.
3. In DNA, to what base does adenine bond?

Answer: Thymine

Adenine and thymine always bond together, just as cytosine and guanine always bond together.
4. What bases are called purines?

Answer: Adenine & guanine

Purines always bond with pyrimidines. Adenine and guanine are both purines, bonding to the pyrimidines thymine and cytosine respectively.
5. To whom is the discovery of the structure of DNA credited?

Answer: Watson & Crick

James Watson and Francis Crick are widely credited with the discovery of the structure of DNA, based on research carried out by Rosalind Franklin. Darwin is associated with natural selection, Fleming with the discovery of penicillin, and Mendel with genetics.
6. What part of DNA is found at the centre of the molecule?

Answer: Bases

The phosphates and sugars are found on the outside of the molecule while the bases are found in the centre.
7. Weak hydrogen bonds are found between which molecules in DNA?

Answer: Between bases

The bases guanine and cytosine form three hydrogen bonds, while the bases adenine and thymine share two hydrogen bonds.
8. What process is used to copy DNA to produce another identical strand?

Answer: Replication

In replication, an exact copy of the DNA strand is created as it "unzips" and complementary nucleotides rebuild each side. Transcription and translation are used during protein synthesis.
9. To what molecule is the nitrogen base attached in a nucleotide?

Answer: Sugar

In a nucleotide, the base is bonded to the sugar, as is the phosphate, so that the phosphates and bases are not bonded together. The phosphates and sugars repeat to form the outer sides of the ladder-shape, while the bases, bonded to the sugars, form the ladder-like rungs on the inside of the molecule.
10. What kind of sugar is found in DNA?

Answer: Deoxyribose

Deoxyribonucleic acid contains the 5-carbon deoxyribose sugar. RNA contains ribose sugar. Galactose and glucose are not found in nucleic acids.
Source: Author Cher40

This quiz was reviewed by FunTrivia editor crisw before going online.
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