Summary New A-Level Biology for AQA: Year 1 & 2 Student Book with on DNA, RNA and protein synthesis

1. DNA Structure: Detailed explanation of the double-helix structure of DNA. The role of DNA in storing genetic information. 2. DNA Replication: How DNA replicates itself during cell division (e.g., mitosis and meiosis). Enzymes involved in DNA replication, such as DNA polymerase. 3. RNA Structure: Comparison between RNA and DNA structures. Types of RNA, including messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). 4. Transcription: Explanation of the transcription process, where RNA is synthesized from a DNA template. Role of RNA polymerase and transcription factors. 5. Genetic Code: Introduction to the genetic code, including codons and amino acids. How the genetic code is read during protein synthesis. 6. Translation: Detailed explanation of translation, where mRNA is used to build a protein. Role of ribosomes, tRNA, and aminoacyl-tRNA synthetases in translation. 7. Regulation of Gene Expression: How gene expression is controlled through transcriptional and post-transcriptional regulation. Role of regulatory proteins and transcription factors. 8. Mutations: Types of mutations, such as point mutations and frameshift mutations. How mutations can impact protein synthesis and lead to genetic disorders. 9. Protein Structure and Function: Overview of protein structure levels (primary, secondary, tertiary, quaternary). The relationship between protein structure and function. 10. Genetic Engineering and Biotechnology: - Application of genetic engineering techniques, including recombinant DNA technology and CRISPR-Cas9. - Ethical considerations in genetic engineering. 11. RNA Interference (RNAi): - How small RNAs regulate gene expression by silencing target mRNAs. - Therapeutic applications of RNAi.