Under specific conditions, a single cell of the unicellular alga Chlorella divides repeatedly by binary fission to form a cluster of daughter cells.
How many cells are there in the cluster after 5 successive cell divisions?
The image length L L\,L of the chloroplast shown above is measured as 42 mm. The actual (real) length of this chloroplast is 7 μm7\ \mu\text{m}7 μm.
Calculate the magnification of the image. Use the formula:
magnification=image sizereal size \text{magnification} = \frac{\text{image size}}{\text{real size}} magnification=real sizeimage sizeRemember that 1 mm=1000 μm1\text{ mm} = 1000\ \mu\text{m}1 mm=1000 μm.
Cell structure Questions
Practise AQA GCSE Biology Cell structure with exam-style questions for Foundation and Higher tier. 51 questions covering Eukaryotes and prokaryotes, Animal and plant cells, Cell specialisation, Cell differentiation, Microscopy, and Culturing microorganisms (biology only), matched to the AQA GCSE Biology (8461) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.