WAEC Biology 2014 Objective — Question 4
Question 4 of 50 from the West African Examinations Council (WAEC) Biology 2014 Objective paper, with the correct answer and a full explanation.
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Active transport can be defined as the movement of
- A. substances from a region of high concentration to a region of low concentration
- B. substances from a region of low concentration to a region of high concentration across a living cell membrane
- C. substances across a living cell membrane using energy from the cellCorrect
- D. movement of molecules in a medium
Explanation
Active transport is the movement of substances against their concentration gradient. It involves the use of energy.
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