Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
12th December 2020
- 1The Solar System, Orbital Motion and Satellites
State what provides the centripetal force that keeps a planet in orbit around the Sun.
- 2Red-shift and the Expanding Universe
State how the amount of red-shift is related to a galaxy's distance from Earth.
- 3Biology Required Practicals and Data Analysis
In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 4Cell Biology
A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
- 5Cell Structure and Microscopy
Why is a stain such as iodine used when preparing a slide?
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