Fig. 3.1 shows some fruits (grapes) of the grapevine, Vitis vinifera. Sucrose is transported in the phloem of the grapevine to the fruits. In the fruits, sucrose is hydrolysed by the enzyme sucrase, which is found in cell walls. The glucose and fructose produced by the hydrolysis of sucrose pass through membrane proteins, known as hexose transporters, into the cytoplasm of the fruit cells.

Q: What topic does this question test?

This question tests Cell membranes and transport in A-Level Biology (syllabus code 9700). It is worth 10 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Biology May/June 2023 examination, Paper 2 Variant 1 (9700_s23_qp_21.pdf).

Question

Fig. 3.1 shows some fruits (grapes) of the grapevine, Vitis vinifera. Sucrose is transported in the phloem of the grapevine to the fruits. In the fruits, sucrose is hydrolysed by the enzyme sucrase, which is found in cell walls. The glucose and fructose produced by the hydrolysis of sucrose pass through membrane proteins, known as hexose transporters, into the cytoplasm of the fruit cells.

Oracle Prep · Accepted Answer

Sign up to Oracle Prep to view the full model answer with examiner insights.

📋 Examiner Report & Trap Analysis

🎯 Mark Scheme Breakdown

Unlock the Examiner's Analysis

About This A-Level Biology Question

Topic

Source

Practice on Oracle Prep

Related Biology Questions