A scientist counts the mitochondria in two cells from the same species of alga. Cell A contains many more mitochondria than cell B.
Which conclusion is supported by this observation?
Cell A makes more glucose by photosynthesis than cell B.
Cell A has a lower energy demand than cell B.
Cell A stores more energy for later use than cell B.
Cell A has a greater energy demand than cell B.
130 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.