Cell Structure and Organelles: Worked Reasoning
≈ 24 minWorked Reasoning
Make each reasoning step visible: identify the knowns, choose the governing idea, apply it and check the result.
This extension applies that lens specifically to Cell Structure and Organelles.
The cell is the basic structural and functional unit of life. Cells are studied under a microscope, and different organelles each do a specific job.
- Cell (plasma) membrane - controls what enters and leaves the cell (selectively permeable).
- Nucleus - contains DNA and controls all cell activities.
- Mitochondria - carry out cellular respiration to release energy.
- Ribosomes - the site of protein synthesis.
- Endoplasmic reticulum and Golgi apparatus - transport and package substances.
- Vacuole - stores cell sap; large and permanent in plant cells.
Plant cells have three extra structures: a cell wall (of cellulose, for support), chloroplasts (for photosynthesis), and a large central vacuole.
Life Sciences Grade 10: Cells, Tissues and the Diversity of Life — Worked Reasoning: Which organelle is found only in plant cells and carries out photosynthesis?
Life Sciences Grade 10: Cells, Tissues and the Diversity of Life — Worked Reasoning: Name the organelle that is the site of protein synthesis in a cell.
Life Sciences Grade 10: Cells, Tissues and the Diversity of Life — Worked Reasoning: A cell measures across in real life. Under a microscope its image measures across. Calculate the magnification. (Hint: .)
Name the original topic being extended by this worked reasoning lesson.
Which statement is the best evidence-led starting point for Cell Structure and Organelles: Worked Reasoning?