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What are three differences and two similarities between active and passive transport?

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ttt12 | Student, Grade 11 | eNoter

Posted December 2, 2008 at 10:12 AM via web

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What are three differences and two similarities between active and passive transport?

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cntryfrog | High School Teacher | (Level 1) Adjunct Educator

Posted December 5, 2008 at 10:20 AM (Answer #1)

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Differences

Passive transport doesn't require energy (ATP), active transport does require energy.

Passive transport moves molecules WITH the concentration gradient (high to low), while active transport moves molecules AGAINST the concentration gradient (Low to High).

Similarities

They both allow the cell to maintain homeostasis by maintaining an equilibrium of subtances in and out of the cell.

They both involve moving material across or through the plasma membrane. 

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enotechris | College Teacher | (Level 2) Senior Educator

Posted December 2, 2008 at 10:34 AM (Answer #2)

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Similarities:

Both involve ion movement. Both use ion channels to move ions across the cell membrane, in or out of the cell.

Differences:

Passive Transport (or Diffusion) moves ions from high concentration to low, using no metabolic energy. Active Transport moves ions from low concentration to high, using metabolic energy in the form of ATP.  Active Transport uses an ion pump (or Sodium/Potassium pump) to move 3 sodium ions out of the cell and 2 potassium ions in to the cell through the energy of 1 ATP molecule.

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caseythesciencegirl | Student | eNotes Newbie

Posted January 4, 2009 at 7:18 AM (Answer #3)

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One is both are active and two is both contain nucleaus.

One is passive which means passes where it needs to go. another is active means in movement. one more is that one is good for the body and one is not.

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