IGCSE A Level Biology MCQs - Chapter 3
Cell Membranes and Transport Trivia Questions & Answers PDF Download - 4
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Cell Membranes & Transport Exam Questions and Answers PDF Download: Test 4
The concentration gradient is said to exist when the
- concentration of ions is more inside the cell and less outside the cell
- concentration of ions is lesser inside the cell and more outside the cell
- hypertonic solution enters the cells
- water enters by osmosis
Each Adenosine Triphosphate (ATP) molecule is used for,
- 2 sodium ions are pumped out of the cell
- 3 sodium ions are pumped out of the cell
- 2 sodium ions are pumped into the cell
- 3 sodium ions are pumped into the cell
Sodium-potassium (NA+ -K+) pump is a type of
- carrier protein
- enzyme
- osmosis
- catalyst
The energy for active transport is provided through
- radiant source
- chemical energy
- adenosine triphosphate (ATP)
- cell surface membranes
Bulk transport of large quantities of materials into the cell is referred to as
- active transport
- diffusion
- bulk transport
- endocytosis
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