Active transport

Created by: 17chlmor
Created on: 29-04-21 21:15

what are the main ways in which dissolved substances move in and out of cells?

• Substances move by diffusion, down a concentration gradient.
• when the substances needed by a cell have to be moved against a concentration gradient, across a partially permeable membrane, this is called active transport.

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what is active transport? what does it allow to happen?

• allows cells to move substances from an area of a low concentration to an area of a high concentration . This movement is against the concentration gradient.
• also allows cells to move substances such as sugar and ions from one place to another through

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why is energy needed for active transport?

to carry a molecule across the membrane and then return to its original position.

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What does active transport allow plant hair root cells to do?

absorb mineral ions required for healthy growth from very dilute solutions in the soil against a concentration gradient.

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what does active transport allow sugar molecules to do?

enables the sugar molecules used for cell respiration to be absorbed from lower concentrations in the gut into the blood where the concentration of sugar is higher.

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Other cards in this set

Card 2

Front

what is active transport? what does it allow to happen?

Back

Card 3

Front

why is energy needed for active transport?

Back

Card 4

Front

What does active transport allow plant hair root cells to do?

Back

Card 5

Front

what does active transport allow sugar molecules to do?

Back

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Active transport