A Level Biology – Nucleic Acids

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A Level Biology – Nucleic Acids

Last updated: 09/12/2020

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Question 1 of 26

1. Question
What are the monomers of nucleic acids?
- Nucleotide
- Amino acids
- Nucleo acids
- Proteins
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Question 2 of 26

2. Question
What is made up by a five-carbon sugar, a phosphate group and a nitrogenous base?
- A nucleotide
- A nucleoside
- A nucleic acid
- An amino acid
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Question 3 of 26

3. Question
What sugar is found in DNA
- Deoxyribose
- Pentose
- Ribose
- Sucrose
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Question 4 of 26

4. Question
What sugar is found in RNA
- Ribose
- Sucrose
- Pentose
- Deoxyribose
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Question 5 of 26

5. Question
How many phosphate groups are present in ADP?
- 2
- 1
- 3
- 4
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Question 6 of 26

6. Question
How many phosphate groups are present in ATP?
- 3
- 4
- 2
- 1
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Question 7 of 26

7. Question
How many phosphate groups are present in AMP?
- 1
- 2
- 3
- 4
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Question 8 of 26

8. Question
Which of these is not a nitrogenous base?
- Adenosine
- Guanine
- Uracil
- Thymine
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Question 9 of 26

9. Question
What does it mean to be a phosphorylated nucleotide?
- Having an extra phosphate group
- Having a phosphate group removed
- Having a phosphate group instead of a nitrogenous base
- Having more than 2 extra phosphate groups
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Question 10 of 26

10. Question
In DNA, how are the two polynucleotide chains arranged?
- Antiparallel
- Parallel
- At an angle
- End to end
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Question 11 of 26

11. Question
Which of these are not present in DNA?
- Uracil
- Adenine
- Thymine
- Guanine
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Question 12 of 26

12. Question
What bond is present between the sugar and the phosphate group?
- Phosphodiester
- Phosphocovalent
- Ionic
- Ester
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Question 13 of 26

13. Question
By which reaction do the sugar, phosphate group and nitrogenous base bond?
- Condensation reaction
- Precipitation reaction
- Ester reaction
- Hydrolysis reaction
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Question 14 of 26

14. Question
Which bond is formed between opposite nitrogenous bases?
- Hydrogen
- Ester
- Covalent
- Phosphodiester
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Question 15 of 26

15. Question
How many bonds form between adenine and thymine?
- 2
- 3
- 4
- 5
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Question 16 of 26

16. Question
How many bonds form between cytosine and guanine?
- 3
- 2
- 4
- 5
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Question 17 of 26

17. Question
Which of these is not a purine?
- Uracil
- Adenine
- Guanine
- Caffeine
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Question 18 of 26

18. Question
Which of these is not a pyrimidine?
- Theobromine
- Uracil
- Cytosine
- Guanine
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Question 19 of 26

19. Question
What is the complementary base pair to uracil?
- Adenine
- Thymine
- Guanine
- Cytosine
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Question 20 of 26

20. Question
What is the name of the structure that large DNA molecule is wound around?
- Histone
- Centromere
- Spindle fibre
- Centriole
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Question 21 of 26

21. Question
What is made up of a pentose sugar and a nitrogenous base?
- A nucleoside
- A nucleotide
- A nucleic acid
- A nucleic acid
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Question 22 of 26

22. Question
Where is DNA found in prokaryotic cells?
- In the cytoplasm
- In the organelles
- In the cell membrane
- In the nucleus
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Question 23 of 26

23. Question
What is DNA referred to as in prokaryotic cells?
- Linked
- Naked
- Super coiled
- Coiled
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Question 24 of 26

24. Question
What is a chromosome with respects to DNA?
- One molecule of DNA
- Several molecules of DNA wound around one another?
- Four molecules of DNA linked with a centromere
- Molecules of DNA combined with spindle fibres
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Question 25 of 26

25. Question
How many rings are present in a purine?
- 2
- 1
- 3
- 4
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Question 26 of 26

26. Question
How many rings are present in a pyrimidine?
- 1
- 2
- 3
- 4
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