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Summary AQA A level Biology Topic 1 Revision Notes £8.49   Add to cart
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Summary AQA A level Biology Topic 1 Revision Notes
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These are revision notes regarding the first topic of Biological Molecules taught in Year 12. They have notes under each topic and meet the specification. This is a really helpful tool if you do not want to waste your time making notes. These are handy and helpful.

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  • December 14, 2022
  • 8
  • 2022/2023
  • Summary

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Monomers are smaller units which can create larger molecules
Polymers are made from repeating units of monomers bonded together.


Monomers Polymers

Glucose Starch
Cellulose
Glycogen

Amino Acid Protein

Nucleotide DNA and RNA

Fatty Acids Lipids

Two key chemical reactions:
Condensation :Joining two molecules together creating a chemical bond and removing
water molecules.
Hydrolysis: Uses water to break the chemical bonds between two molecules.


Monosaccharide Disaccharide Polysaccharide

Glucose Sucrose Starch

Fructose Maltose Cellulose

Galactose Lactose Glycogen




Disaccharides:
Made by two monosaccharides joined together by a
glycosidic bond formed by a condensation reaction.
Glucose + Glucose → Maltose + Water
Glucose + Galactose → Lactose + Water
Glucose + Fructose → Sucrose + Water
Polysaccharides:
Created by condensation reactions between many
glucose monomers.
Starch is stored as glucose in plants.
Cellulose provides structural strength in plants.
Glycogen is found in animals and stores of glucose
found in liver and muscle cells.
1-6 glycosidic bonds creates branched structure

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