Chapter 1 / 6 short lessons
Cells and microscopy
Identify the cell structures you can see, explain their jobs and measure them correctly.
H2 Biology / 9477 / 2027 syllabus
What do you think?
An image is enlarged on your screen. What stays trustworthy for a size calculation?
Lessons
0 of 6 marked as readCells are the units of life
Apply cell theory and distinguish cells from their components.
About 5 minFollow a protein through a cell
Recognise and connect ribosomes, endoplasmic reticulum, Golgi body, lysosomes and membranes.
About 7 minMatch organelles to their jobs
Identify nuclear, energy-converting and structural cell components.
About 7 minRecognise a bacterial cell
Describe the characteristic organisation of a typical bacterium.
About 5 minCalibrate a microscope measurement
Use a stage micrometer, graticule, scale bars and cautious image interpretation.
About 7 minDraw, measure and compare specimens
Make a plan diagram and a cell drawing to the marked rules, calculate actual size from an image to 2 significant figures, and compare two specimens in an observable-differences table.
About 8 minWhat you will be able to do
- Recognise cellular organisation and organelles.
- Follow membrane traffic through a secretory cell.
- Calibrate and interpret microscope observations.
Spaced review
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