Active transport

Which of the following is not an example of active transport?

Feb/March 2016

A student made the following statements about how ions move by active transport. Which of the statements are correct?

Feb/March 2020

A student has written the following points about the movement of ions by active transport. Which points are correct?

Feb/March 2020

Which row gives the definition of active transport?

Feb/March 2021

Which row gives a description of active transport?

Feb/March 2021

The diagrams illustrate particles moving across a membrane. The arrows indicate the direction of movement. Which diagram represents active transport?

Feb/March 2023

The graph illustrates the rate at which magnesium ions are taken up by two similar plants, X and Y. For each plant, the roots were placed in a series of solutions. Each solution had a different magnesium ion concentration. Every other condition was kept constant. What is a possible explanation for the difference in the results for the two plants?

Feb/March 2023

Which of the following statements about active transport is correct?

Feb/March 2024

Which row gives the correct description of active transport?

Feb/March 2024

Three processes are given below. 1 Molecules or ions cross membranes. 2 Molecules or ions are transported using protein carriers. 3 Ions enter root hairs. Which of these processes can use active transport?

Feb/March 2025

Active transport is the process of moving

May/June 2016

Active transport refers to the movement of

May/June 2016

Which of the following is an example of active transport?

May/June 2017

Which process makes use of the energy released by respiration?

May/June 2019

Which row gives the description of active transport?

May/June 2019

Which process makes use of the energy released during respiration?

May/June 2019

Which row gives a description of active transport?

May/June 2019

What process is used for the uptake of glucose by epithelial cells in kidney tubules?

May/June 2021

Which process is responsible for glucose uptake by the epithelial cells of kidney tubules?

May/June 2021

By which process do epithelial cells of kidney tubules take up glucose?

May/June 2021

Which row gives the description of active transport of ions?

May/June 2023

The concentration of sodium ions in the soil is lower than the concentration inside root hair cells. Which process is used when sodium ions move into root hair cells from the soil?

May/June 2023

Which row indicates the characteristics of active transport?

May/June 2023

The graph presents the findings from an investigation into how oxygen affects the uptake of glucose by cells. What conclusion can be drawn from these data?

May/June 2023

Finish Table 1.1 by adding ticks (✓) to indicate the correct characteristics of each process.

May/June 2023

Which row gives the correct description of active transport?

May/June 2024

Which row gives the description of active transport?

May/June 2024

Which process needs energy released by respiration?

May/June 2024

Which diagram illustrates active transport?

May/June 2024

Which statement describes the net movement of particles in animal cells during active transport?

May/June 2025

A student gave the following statements about ion movement by active transport. Which of these statements are correct?

May/June 2025

Which process in plants requires energy released by respiration?

May/June 2025

What is meant by active transport?

Oct/Nov 2016

A student wrote the following claims about how ions move by active transport. Which of these claims are correct?

Oct/Nov 2017

What are the characteristics of active transport?

Oct/Nov 2018

Which process is involved in the movement of glucose into the epithelial cells of kidney tubules?

Oct/Nov 2018

Which process needs energy supplied by respiration?

Oct/Nov 2019

A number of examples of substances crossing membranes are given below. 1. glucose molecules into the epithelial layer lining the small intestine 2. nitrate ions from a dilute soil solution into a solution of higher concentration inside root hair cells 3. water molecules moving out of mesophyll cells and into the air spaces inside a leaf For which must oxygen be present?

Oct/Nov 2019

Which process relies on active transport?

Oct/Nov 2019

The diagram shows a root hair cell. Why does a root hair cell have a large number of mitochondria?

Oct/Nov 2019

The cells in a plant root contain a greater concentration of magnesium ions than the nearby soil. Which process will transport the magnesium ions into the root?

Oct/Nov 2021

The diagram illustrates how mineral ions are taken up by root hair cells. Which kind of molecule is marked X on the diagram?

Oct/Nov 2021

Fig. 2.1 is a photomicrograph showing the tip of a plant root. Fig. 2.2 presents the findings of a study into the rate at which nitrate ions are taken up at different locations along the root in Fig. 2.1.

Oct/Nov 2021

Which row gives the description of active transport?

Oct/Nov 2022

Several examples of substances crossing membranes are shown below. 1 glucose molecules into the epithelium lining the small intestine 2 nitrate ions from a dilute soil solution into a solution of higher concentration in root hair cells 3 water molecules from mesophyll cells to the air spaces within a leaf For which of these examples is oxygen required?

Oct/Nov 2022

Several examples of substances crossing membranes are shown. For which of these examples must oxygen be present?

Oct/Nov 2022

A number of examples of substances crossing membranes are shown. In which of these examples has oxygen to be available?

Oct/Nov 2022

The nitrate ion concentration is greater inside a root hair cell than it is in the soil. What would be needed for nitrate ions to be taken up into the root hair cell?

Oct/Nov 2023

Which statements concerning active transport are correct?

Oct/Nov 2023

Which process depends on active transport?

Oct/Nov 2023

What is one feature of active transport?

Oct/Nov 2024

Which statement about active transport is correct?

Oct/Nov 2024

The diagram shows a substance passing through a cell membrane and using energy released by respiration. Which transport method is shown by the diagram?

Oct/Nov 2024

Which row gives the correct statements about active transport?

Oct/Nov 2025