Epithelial cells in the small intestine have cell structures known as microvilli. The microvilli of these cells are found only on the surface that borders the gut lumen.
Fig. 1.1 shows images of microvilli of intestinal epithelial cells. These images have been obtained using a scanning electron microscope and a transmission electron microscope.
Fig. 1.1A is at a different magnification to Fig. 1.1B.
[Figure 1.1]

Q: What topic does this question test?

This question tests Cell structure in A-Level Biology (syllabus code 9700). It is worth 13 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Biology May/June 2022 examination, Paper 2 Variant 2 (9700_s22_qp_22.pdf).

Question

Epithelial cells in the small intestine have cell structures known as microvilli. The microvilli of these cells are found only on the surface that borders the gut lumen.
Fig. 1.1 shows images of microvilli of intestinal epithelial cells. These images have been obtained using a scanning electron microscope and a transmission electron microscope.
Fig. 1.1A is at a different magnification to Fig. 1.1B.
[Figure 1.1]

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