Biology for IGCSE & O level - Movement Into And Out Of Cells (Section 1 - No. 47)
Which of the following scenarios is an example of active transport?
Oxygen moving from the lungs into the bloodstream.
Water moving across a cell membrane.
Glucose being transported into an intestinal cell against its concentration gradient.
Carbon dioxide moving out of a cell.
Explanation
Active transport moves substances against their concentration gradient.
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