Combined Science: Trilogy 8464: B1.Cell biology Topical Past Paper Questions

Smoking increases the risk of lung cancer. ## $ \underline{1} $ Figure 5 shows a lung cell dividing Figure 5 Describe the process of the cell cycle shown in Figure 5. $ \underline{2} $ Lung cancer is malignant. Explain what is meant by a malignant tumour. [3 marks] Smoking can da…

Figure 2 shows onion cells viewed using a light microscope. Figure 2 Figure 3 shows the apparatus given to a student. Figure 3 Describe how the student could use the apparatus to estimate the mean length of onion cells on the slide. [6 marks]

This question is about cell division. 1 Write the biological structures from the box in the correct order of size. [1 mark] Figure 3 shows how a fertilised egg cell can produce specialised cells. Figure 3 2 Name Process A. [1 mark] 3 How many cell divisions are needed to form a 1…