A Level biology – DNA and RNA

Last updated: 20/02/2020

AQA A-Level Biology Nucleic acids are important information-carrying molecules A Level biology – DNA and RNA

Time limit: 0

Quiz Summary

0 of 24 Questions completed

Questions:

Information

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 24 Questions answered correctly

Your time:

Time has elapsed

You have reached 0 of 0 point(s), (0)

Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)

Average score
Your score

Categories

Not categorized 0%

Current
Review
Answered
Correct
Incorrect

Question 1 of 24

1. Question
Which molecule holds genetic information?
- DNA
- RNA
- Ribosome
- tRNA
Correct

Incorrect
Question 2 of 24

2. Question
What are ribosomes formed from?
- RNA and proteins
- DNA and proteins
- DNA and lipids
- RNA and lipids
Correct

Incorrect
Question 3 of 24

3. Question
Which of the following are not found in nucleotides?
- Glucose
- Pentose
- Nitrogen-containing base
- Phosphate group
Correct

Incorrect
Question 4 of 24

4. Question
Which of the following are not found in DNA?
- Uracil
- Adenine
- Phosphate group
- Guanine
Correct

Incorrect
Question 5 of 24

5. Question
What type of reaction occurs between two nucleotides?
- Condensation
- Reduction
- Oxidation
- Hydrolysis
Correct

Incorrect
Question 6 of 24

6. Question
What type of bond forms between two nucleotides?
- Phosphodiester bond
- Glycosidic link
- Peptide bond
- Disulfide bridge
Correct

Incorrect
Question 7 of 24

7. Question
Which of the following are not found in DNA?
- Ribose
- Deoxyribose
- Cytosine
- Thymine
Correct

Incorrect
Question 8 of 24

8. Question
In which type of organisms is DNA contained in a nucleus?
- Eukarya
- Bacteria
- Archaea
- Viruses
Correct

Incorrect
Question 9 of 24

9. Question
What is the best description of DNA?
- Double helical structure
- Single polynucleotide chain
- Involved in protein synthesis
- Only found inside the nucleus
Correct

Incorrect
Question 10 of 24

10. Question
Which polynucleotide comprises of two chains held together by hydrogen bonds?
- DNA
- rRNA
- mRNA
- tRNA
Correct

Incorrect
Question 11 of 24

11. Question
Which type of RNA does not exist?
- pRNA
- tRNA
- rRNA
- mRNA
Correct

Incorrect
Question 12 of 24

12. Question
What are the monomers that form DNA and RNA known as?
- Nucleotides
- Amino acids
- Monosaccharides
- Lipids
Correct

Incorrect
Question 13 of 24

13. Question
How many carbon atoms does the sugar have that comprises the basic structure of a nucleotide?
- 5
- 6
- 7
- 2
Correct

Incorrect
Question 14 of 24

14. Question
Which of the following structures in DNA can vary?
- Nitrogenous base
- Phosphate group
- Deoxyribose
- Phosphodiester bond
Correct

Incorrect
Question 15 of 24

15. Question
What are the four possible bases in DNA?
- Guanine, Adenine, Cytosine, Thymine
- Guava, Adenine, Cytosol, Thalidomide
- Guanine, Adenosine, Cytosine, Thymine
- Guava, Adenosine, Cytosine, Testosterone
Correct

Incorrect
Question 16 of 24

16. Question
What is the basic structure of nucleotide composed of?
- Pentose sugar, nitrogenous base, phosphate group
- Glucose, nitrogenous base, hydroxyl group
- Pentose sugar, nitrogenous base, hydroxyl group
- Starch, nitrogenous base, phosphate group
Correct

Incorrect
Question 17 of 24

17. Question
Which base is replaced by uracil in RNA?
- Thymine
- Adenine
- Guanine
- Cytosine
Correct

Incorrect
Question 18 of 24

18. Question
How many hydrogen bonds form between adenine and thymine?
- 2
- 1
- 3
- 4
Correct

Incorrect
Question 19 of 24

19. Question
How many hydrogen bonds form between cytosine and guanine?
- 3
- 1
- 2
- 4
Correct

Incorrect
Question 20 of 24

20. Question
What type of bonding joins the two DNA polynucleotide strands together in DNA?
- Hydrogen bond
- Glycosidic link
- Phosphodiester bond
- Peptide bond
Correct

Incorrect
Question 21 of 24

21. Question
What is it called when each base can only join with one particular base?
- Complementary Base Pairing
- Mate base pairing
- Double base pairing
- Matching
Correct

Incorrect
Question 22 of 24

22. Question
DNA forms what type of structure?
- Double helix
- α-helix
- Beta-pleated sheet
- Single helix
Correct

Incorrect
Question 23 of 24

23. Question
Which scientists won the 1962 Nobel Prize for “for their discoveries concerning the molecular structure of nucleic acids and its significance for information transfer in living material.”
- Watson, Crick and Wilkins
- Watson and Crick
- Watson, Crick, Wilkins and Franklin
- Messelson and Stahl
Correct

Incorrect
Question 24 of 24

24. Question
Which scientist’s vital contributions in discovering the molecular structure of DNA were only recognised post-humously?
- Rosalind Franklin
- James Watson
- Francis Crick
- Maurice Wilkins
Correct

Incorrect