Biology · Oct / Nov 2019 · Paper 11 · Question 10

The table shows the rates of absorption of two different sugars, arabinose and glucose, in living and dead intestines. The concentrations of the sugars inside the intestines were the same in each case. | | rate of absorption / arbitrary units | | |---|---|---| | | arabinose | glucose | | living intestine | 31 | 102 | | dead intestine | 31 | 34 | What are the main methods of absorption of arabinose and glucose in living intestine?

1. Aactive transport, active transport
2. Bactive transport, diffusion
3. Cdiffusion, active transport
4. Ddiffusion, diffusion

As printed in the paper