Figure 6 shows a root hair cell from a strawberry plant - Edexcel - GCSE Biology - Question 3 - 2020 - Paper 1

The structure of root hair cells facilitates water absorption due to their long and thin projections, which increase the surface area available for absorption. Additionally, the thinner cell wall allows water to travel a shorter distance, enhancing the efficiency of water uptake.

To find the mean rate of growth at 30°C, we can use the data provided. At 30°C, the area of the fungus is 72 cm². Since it was kept for 5 days, we divide the area by 5 days:

$\frac{72 \text{ cm}^2}{5 \text{ days}} = 14.4 \text{ cm}^2 \text{ per day}$

The growth or area of fungus increases as the temperature rises from 5°C to 30°C.

Boiling impacts enzymatic activity by denaturing the enzymes, which are sensitive to heat. The high temperature alters the shape of the enzyme and its active site, preventing substrates from fitting into the active site and inhibiting the decomposition process.

Osmosis leads to water moving out of the fungus cells, resulting in dehydration of the cells. This loss of water causes the cells to die.