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Summary Ch 2 Nucleic acids notes A* AQA A Level Biology

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A set of thorough and concise notes created and used by an A* grade student to revise Nucleic acids (ch 2 from the A Level AQA Biology course). The notes are detailed and clearly explain the topic by breaking each process down into steps. It includes clear and detailed diagrams and includes all content from the AQA Ch 2 specification and textbook.

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AQA
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Unit 1 - Biological molecules










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Connected book

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Glenn Toole, Susan Toole AQA Biology A Level Year 2 Student Book
  • januari 2015
  • 9780198351764
  • 1

Written for

Study Level
A/AS Level
Publisher
AQA
Subject
A Level Biology
Course
Unit 1 - Biological molecules
All documents for this subject (550)

Document information

Summarized whole book?
No
Which chapters are summarized?
Ch 2 nucleic acids
Uploaded on
May 28, 2022
Number of pages
30
Written in
2020/2021
Type
Summary

Subjects

  • aqa
  • a level
  • biology
  • paper 1
  • nucleic acids
  • as
  • a

Content preview

2.1 Structure of RNA
and DNA

,Nucleotide structure
• 3 main components:
• Pentose sugar
• Phosphate group
• Organic bases (A, C, T, G, U)
• They form during condensation reactions
• Nucleotides join into dinucleotides via condensation also, making a
phosphodiester bond between a phosphate and a pentose sugar
• These are linked into polynucleotide chains e.g. RNA and DNA

, RNA structure
• Single polynucleotide chain [short]
• Sugar is ribose
• Bases are adenine & uracil, and cytosine &
guanine

• 3 types:
• 1 transfers genetic info from DNA to
ribosomes
• 2 makes up ribosomes along with proteins
• 3 is in protein synthesis

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