GCSE Chemistry (AQA)
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Organic chemistry
Synthetic and naturally occurring polymers
DNA
3:16
Natural Polymers
Spec
4.7.3.4
- DNA is a large, naturally occurring molecule essential for life.
- It encodes genetic instructions for the development and functioning of living organisms and viruses.
- DNA determines growth, changes during puberty, and characteristics like hair and eye color.
- It instructs cells on protein production for hormones and enzymes.
- DNA stands for deoxyribonucleic acid.
- DNA molecules are structured as two polymer chains twisted in a double helix.
- Polymers are long molecules made by joining smaller molecules called monomers.
- DNA strands form chromosomes in the nuclei of animal and plant cells.
- DNA is made from four different monomers called nucleotides.
- Nucleotides form polymer chains that create the double helix structure.
- The order of nucleotides determines genetic instructions.
- Genetic instructions determine characteristics like eye color.
- Specifics of how genetic instructions work are not needed for a chemistry exam.
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