A-LevelBiologyTransport in plantsMay/June 2017Paper 2 Q58 Marks
Sugar molecules enter cells through transport proteins. (a) Explain why transport proteins are required for the movement of sugar molecules, such as glucose and fructose, into cells. Some plant cells convert fructose and glucose into sucrose for transport from sources to sinks. Sucrose is moved into phloem sieve tubes as shown in Fig. 5.1. [Figure 5.1]
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