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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Active transport

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4

Paper

2

Marks

Topic

Active transport

Exam-style question

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Paper 4Theory (Extended)2 marks

Active transport is crucial for cellular processes.

Description

Active Transport Overview

Active transport is the movement of particles from an area of lower concentration to an area of higher concentration, requiring energy from respiration.

  1. a

    Explain the importance of active transport in cells.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 4 structured question: Active transport

Paper 4Theory (Extended)3 marks

Description

Mechanism of Active Transport

Active transport requires energy to move substances against their concentration gradient.

  1. a

    Describe the process of active transport and its energy requirements.

    Aim for approximately 3 distinct marking points.

    [3]