SACE Stage 2 Biology Practice Questions - SACE Stage 2 Biology External Assessment Exam

DNA contains ribose sugar and uracil, whereas RNA contains deoxyribose sugar and thymine. DNA is double-stranded containing deoxyribose sugar and thymine, whereas RNA is typically single-stranded containing ribose sugar and uracil. DNA contains adenine, cytosine, guanine, and uracil, whereas RNA replaces uracil with thymine. DNA contains 2' hydroxyl groups making it chemically reactive, whereas RNA lacks 2' hydroxyl groups making it highly stable.