Cell biology

Cell biology is the study of the structure and function of cells, the basic units of life. In WJEC GCSE Biology, this topic covers the differences between animal and plant cells, the roles of organelles, and how cells are adapted for specific functions. You'll also explore cell division (mitosis and meiosis), stem cells, and the transport of substances across cell membranes. Understanding cell biology is essential because it forms the foundation for topics like genetics, respiration, and photosynthesis.

This topic is crucial for your GCSE because it appears in multiple sections of the exam, from multiple-choice questions to extended writing. You'll need to recall the functions of organelles like the nucleus, mitochondria, and chloroplasts, and explain how cells become specialised. Cell biology also links to practical skills, such as using microscopes to observe cells and calculating magnification. Mastering this topic will give you a strong start in biology and help you see how living organisms are built from the ground up.

In the wider WJEC course, cell biology connects to human biology (e.g., how nerve cells transmit signals), plant biology (e.g., how root hair cells absorb water), and health (e.g., how cancer results from uncontrolled cell division). By learning about cells, you're essentially learning the 'language' of biology — everything else builds on this knowledge.