Red blood cells are specialised cells. They have no nucleus.
How does having no nucleus help a red blood cell to carry out its function?
The cell can divide more quickly to replace lost cells.
The cell can respire faster to release more energy.
There is more space in the cell to carry haemoglobin.
There is more space in the cell for mitochondria.
194 exam-style questions on OCR GCSE Biology 2.1 Supplying the cell, covering 2.1.1 Transport across cell membranes, 2.1.2 Mitosis and the cell cycle, 2.1.3 Importance of cell differentiation, and 2.1.4 Stem cells. Each one has a worked solution and a mark scheme showing where the marks go.