The table describes the adaptations of three types of specialised eukaryotic cells.
| Spermatozoa | Root hair cells | Ciliated epithelial cells | |
|---|---|---|---|
| A | acrosome containing enzymes to digest the egg's outer layer and a diploid nucleus containing genetic material | long projection to increase surface area and many chloroplasts for starch synthesis | microvilli to increase the surface area for rapid diffusion of oxygen into cells |
| B | acrosome containing hydrolytic enzymes and many mitochondria to provide ATP for movement | long projection to increase surface area and thin cell walls for rapid uptake of water and ions | hair-like cilia that beat synchronously to slide mucus up the airways and away from the lungs |
| C | acrosome containing hydrolytic enzymes and many mitochondria to provide ATP for movement | thick cell walls to withstand high turgor pressure and many chloroplasts for photosynthesis | microvilli to increase the surface area for rapid diffusion of oxygen into cells |
| D | acrosome containing enzymes to digest the egg's outer layer and a diploid nucleus containing genetic material | long projection to increase surface area and thin cell walls for rapid uptake of water and ions | hair-like cilia that beat synchronously to slide mucus up the airways and away from the lungs |
Which of the rows, A to D, is a correct description of the three cells?
Row A
Row B
Row C
Row D
40 exam-style questions on OCR A A Level Biology Cell division, cell diversity and cellular organisation. Each one has a worked solution and a mark scheme showing where the marks go.