Fossils, Bacterial Resistance, and Classification Systems
This page delves into the evidence for evolution, the challenges of antibiotic resistance, and the methods used to classify organisms, all key topics in AQA GCSE Biology inheritance, variation and evolution past papers.
Fossils provide crucial evidence for evolution, showing how organisms have changed over millions of years. The fossil record, though incomplete, offers valuable insights into the history of life on Earth.
Example: Fossils can be preserved remains, traces like footprints, or minerals that have replaced organic matter.
Bacterial resistance is a pressing concern in modern medicine. Bacteria evolve rapidly due to their short generation times, leading to the emergence of antibiotic-resistant strains.
Highlight: To reduce the development of resistant bacteria, it's crucial to use antibiotics responsibly and complete prescribed courses.
Classification systems help organize the diversity of life. The Linnaean system, based on shared characteristics, uses a hierarchical structure from Kingdom to Species.
Vocabulary: The binomial naming system gives each organism a two-part name: genus and species.
Carl Woese's Three Domain System, based on RNA analysis, provides a more modern approach to classification, dividing life into Archaea, Bacteria, and Eukaryota.
This page offers in-depth coverage of evolutionary evidence and classification methods, essential for mastering Condensed b15 notes kerboodle textbook gcse higher answers.
