A-Level UK (AQA, Edexcel, OCR) · Biology
Cells and microscopy
7 practice questions, each with the answer and an explanation.
Practise Cells and microscopy now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 7 questions
- A cell is drawn 45 mm wide in a micrograph with magnification x900. What is the real width of the cell?
- What is the main advantage of a transmission electron microscope over a light microscope?
- Which organelle is the main site of the production of ATP by aerobic respiration in eukaryotic cells?
- Which structure is found in prokaryotic cells but not in eukaryotic cells?
- In a sample of 150 root-tip cells, 12 are in mitosis. What is the mitotic index?
- During which stage of mitosis do sister chromatids separate and move to opposite poles?
- An onion cell scale is calibrated using a stage micrometer. 100 eyepiece units equal 0.25 mm. A cell is 8 eyepiece units long. What is its length?
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