Mature mammalian red blood cells (erythrocytes) undergo a specialized development process during which they lose both their nucleus and their mitochondria.
Which of the following processes is a mature erythrocyte still capable of performing?
Regenerating ATP via oxidative phosphorylation on the inner mitochondrial membrane
Maintaining intracellular ion concentrations via ATP-dependent active transport
Transcribing genes to replace worn-out membrane channel proteins
Translating existing mRNA templates into functional enzymes on the rough endoplasmic reticulum
40 exam-style questions on OCR GCSE Biology 1.1 Cell structures, covering 1.1.1 Viewing cells with light microscopes, 1.1.2 Sub-cellular structures and functions, and 1.1.3 Electron microscopy and resolution. Each one has a worked solution and a mark scheme showing where the marks go.