Practice IB Biology Topic Cell Biology with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Cell Biology and mirrors Paper 1A, 1B, 2 style where relevant.
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Which of the following features are present in prokaryotic cells?
Which of the following features are present in prokaryotic cells?
| Cell wall | Plasma membrane | Mitochondria | |
|---|---|---|---|
| A. | Yes | Yes | Yes |
| B. | Yes | No | No |
| C. | No | Yes | No |
| D. | Yes | Yes | No |
Which of the following characteristics found in a structure necessarily indicates that it is alive?
In which stage of mitosis is the cell labelled X ?
The data below shows the concentrations of three ions in a frog.
| Ion | Concentration / mmol dm | |
|---|---|---|
| Extracellular fluid | Cytoplasm | |
| 110.0 | 13.0 | |
| 138.0 | 2.5 | |
| 3.0 | 90.0 |
What best explains the distribution of ions?