Unit 1 · 9 lessons
Tissues, Organs & Systems of Living Things
How cells divide, specialize and work together as tissues, organs and organ systems in animals and plants, what happens when cell division goes wrong, and the medical technologies and public health choices built on that knowledge.
- 74 practice questions
- 72 flashcards
Lessons
- 1Plant and Animal Cells and the MicroscopeThe organelles inside plant and animal cells and what each one does, how to use a compound light microscope, and how to calculate total magnification, field of view and the size of a cell.8 questions
- 2The Cell Cycle and MitosisWhy cells divide, the stages of the cell cycle (interphase, prophase, metaphase, anaphase, telophase and cytokinesis), how plant and animal cells differ, and how to estimate how long each stage lasts from a microscope count.8 questions
- 3Cancer: When Cell Division Goes WrongHow normal cells control their division, how cancer cells escape that control, benign versus malignant tumours, common causes, and how screening, prevention and treatment work.8 questions
- 4Cell Specialization, Differentiation and Stem CellsHow one fertilized egg gives rise to hundreds of specialized cell types, what stem cells and meristematic cells are, how some organisms regenerate lost parts, and the ethical questions stem-cell research raises.8 questions
- 5From Cells to Systems in AnimalsThe levels of organization from cell to organism, the four main animal tissue types, how tissues combine into organs, and how organ systems depend on each other.8 questions
- 6The Digestive SystemHow mechanical and chemical digestion break food into small molecules, what each organ along the digestive tract does, and how villi absorb nutrients into the blood.8 questions
- 7The Circulatory and Respiratory SystemsHow the heart, blood vessels and blood transport materials, how the lungs exchange oxygen and carbon dioxide by diffusion, and how the two systems work together to supply every cell.9 questions
- 8Plant Tissues, Organs and SystemsThe tissues that make up a plant, the root and shoot systems, how xylem and phloem transport water and sugar, the structure of a leaf (mesophyll, stomata, veins) and how transpiration pulls water upward.8 questions
- 9Medical Imaging, Public Health and EthicsHow X-rays, CT, MRI and ultrasound see inside the body and what each is best for, how screening and vaccines (HPV, MMR) protect whole populations, and how to weigh the ethics of transplants, cloning and stem cells.9 questions