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The movement of ions or molecules agains...

The movement of ions or molecules against a concentration gradient with the utilisation of energy is known as active transport.

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ICSE-CELL : THE UNIT OF LIFE -Test Your Progress (State whether the following statements are true or false )
  1. The plasma membrane is a fully permeable membrane.

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  2. State whether the following statement is true or false. The ability of...

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  3. The movement of ions or molecules against a concentration gradient wi...

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  4. A membrane which allows certain substances to pass through it, but no...

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  5. ATP is required for active transport. A. True B. False

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  6. State whether the following statements are true or false.The barrier b...

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  7. State whether the following statements are true or false. Lipid-solubl...

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  8. State whether the following statement is true or false. The modern mod...

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  9. Fluidity of a membrane increases as the percentage of unsaturated fat...

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  10. State true or false. The lipid portion of a plasma membrane acts like ...

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  11. State true or false. All cells contain the same kinds of proteins in t...

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  12. State true or false. Crenation of red blood cells results when the red...

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  13. State whether the following statement is true or false.Cells placed in...

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  14. State whether the following statement is true or false. Carrier protei...

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  15. State whether the following statements are true or false. In the sodiu...

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  16. The process by which a white blood cell or an amoeba engulfs bacteria...

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  17. State whether the following statement is true or false. Receptors are ...

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  18. State whether the following statement is true or false. An extracell...

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  19. State whether the following statement is true or false. In the cells...

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  20. State whether the following statement is true or false. A hypertonic...

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