Biology Exam — Organelles, Cell Types and Functions
Master the key concepts of cell biology: the difference between prokaryotic and eukaryotic cells, animal and plant cells, the function of each organelle, and fundamental processes such as photosynthesis, cellular respiration and mitosis — with a detailed explanation after each answer.
Biology & Geology · Secondary
The most important distinction in cell biology: the presence or absence of a defined nucleus. Bacteria are prokaryotes; animals, plants and fungi are eukaryotes.
Cell wall, chloroplasts and a large central vacuole are exclusive to plant cells. The exam tackles these differences with direct and comparative questions.
Mitochondrion=energy (ATP), ribosomes=proteins, chloroplast=photosynthesis, vacuole=storage. Each organelle is learned with its function in one focused question.
"A Year 9 student who was memorising organelles without understanding them sees the mitochondrion question: "powerhouse using O₂ to produce ATP". She links it to exercise. Now she remembers it."
Tricks and techniques to master this topic faster:
Key difference: prokaryote (bacteria) has NO nucleus. Eukaryote (animals, plants, fungi) has a nucleus with a membrane.
Plant vs animal cell: plant has CELL WALL + CHLOROPLASTS + LARGE VACUOLE. Animal cell has none of these three.
Mitochondrion = energy (cellular respiration). Chloroplast = photosynthesis (only in light-using cells). Ribosome = proteins (in all cells).
Photosynthesis: CO₂ + H₂O + light → glucose + O₂. Cellular respiration: glucose + O₂ → ATP + CO₂ + H₂O. They are opposite processes.
If you are studying The Cell — Basic Unit of Life, these curriculum topics complement each other:
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