1. TopicGenes, DNA and proteinsLevelGCSE Outcomes1.To describe the structure of DNA 2.To describe how DNA codes for protein 3.To appreciate the difference in scale of genes, proteins and chromosomes www.thescienceteacher.co.ukwww.thescienceteacher.co.uk | resources for science teachers who like to think

2. Arrange these in order of size gene protein nucleotide Largest Smallest guanine cell nucleus chromosome deoxyribose sugar organism hydrogen bond codon Glycine (amino acid) mRNA

3. gene protein nucleotide Largest Smallest guanine cell nucleus chromosome deoxyribose sugar organism Write a paragraph, using each word, to describe the structure of DNA and explain how it codes for characteristics. hydrogen bond codon glycine (amino acid) mRNA