Movement of Substances Across the Cell Membrane

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question 1 of 4 Grade: Form 3

Q: 3 Which of the following is true regarding active transport?

An input of energy is not required for it to occur.
It allows particles to pass easily between lipids in cell membranes.
It occurs against a concentration gradient.
Particles move from high concentration to low concentration.

Did You Know?

During electrolysis of brine, chlorine gas is produced at the anode (P) and hydrogen gas at the cathode (Q). The solution becomes more alkaline (NaOH is formed), so pH increases.

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