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Which statements best describe the difference between active transport and passive transport?

Active transport moves substances along the concentration gradient.

Passive transport move substances against the concentration gradient.

Active transport occurs in all cells.

Passive transport requires ATP.

Active transport occurs only in cells that require large amounts of energy.

Passive transport occurs in all cells.

Active transport requires ATP.

Passive transport does not require ATP.

1 answer

To differentiate between active transport and passive transport, the following statements are accurate:

  1. Active transport moves substances against the concentration gradient. - This is true; active transport requires energy to move substances from a low concentration to a high concentration.

  2. Passive transport moves substances along the concentration gradient. - This is accurate; passive transport occurs naturally when substances move from an area of higher concentration to an area of lower concentration without the use of energy.

  3. Active transport requires ATP. - This statement is correct; active transport mechanisms, such as pumps, utilize energy (often from ATP) to transport substances against their concentration gradient.

  4. Passive transport does not require ATP. - This is true; passive transport relies on the natural kinetic energy of molecules to move them down their concentration gradient without the need for energy input.

  5. Active transport occurs only in cells that require large amounts of energy. - This statement is misleading; while active transport does require energy, it is not limited to cells that generally require large amounts of energy. Many types of cells engage in active transport.

  6. Active transport occurs in all cells. - This is generally considered true; many types of cells utilize active transport mechanisms as part of their normal physiology.

  7. Passive transport occurs in all cells. - This is accurate; passive transport mechanisms are universal and occur in all cells as they allow for the movement of substances without energy expenditure.

Summary of Correct Statements:

  • Active transport moves substances against the concentration gradient.
  • Passive transport moves substances along the concentration gradient.
  • Active transport requires ATP.
  • Passive transport does not require ATP.
  • Active transport occurs in many types of cells.
  • Passive transport occurs in all cells.

The incorrect or misleading statements from your list are:

  • "Active transport moves substances along the concentration gradient."
  • "Passive transport moves substances against the concentration gradient."
  • "Active transport occurs only in cells that require large amounts of energy."