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Summary Proteins A level Year 1

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The notes I used for A level Biology Year 1. I ended up achieving an A* in my final exams. The notes were based on the answers required to give in exam questions based on the mark scheme.

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Study Level: A/AS Level
Examinator: AQA
Subject: A Level Biology
Unit: Unit 1 - Biological molecules

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Uploaded on: November 2, 2024
Number of pages: 1
Written in: 2024/2025
Type: Summary

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proteins

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Proteins summary notes
27 September 2022 18:24

Protein uses:
Structure- blood vessels, hair, feathers
Signalling- hormones, neurotransmitters
Digestion and growth- enzymes
Immune system- antibodies
Cellular reactions- transport proteins in cell membranes, enzymes etc

- 22 natural variations of R group, 20 encoded in DNA
- Acidic and basic ends- acts as buffer in solutions
- Molecule is neutral overall or R group affects charge

Dipeptide- made from 2 peptides in a condensation reaction
- Water released
- Peptide bond formed

Polypeptide chains

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Summary Proteins A level Year 1

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