Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
21st September 2020
- 1The Solar System, Orbital Motion and Satellites
State the name of the force that keeps a satellite in orbit around the Earth.
- 2Red-shift and the Expanding Universe
State, in one sentence, what the Big Bang model proposes about the early universe.
- 3Biology Required Practicals and Data Analysis
Why must the same volume of solution be used in every tube in an enzyme investigation?
- 4Cell Biology
A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
- 5Cell Structure and Microscopy
Give the equation linking magnification, image size and real size.
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