Daily Practice

GCSE Science

29th August 1992

5 questions · GCSE · 584 questions in this band

1
The Solar System, Orbital Motion and Satellites
Put the following in order of increasing distance from the Sun: Mars, Venus, Saturn, Earth.
2
Red-shift and the Expanding Universe
Explain why red-shift observations support the idea that the universe is expanding, rather than Earth simply being at the centre of the universe with everything moving away from it.
3
Biology 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?
4
Cell 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.
5
Cell Structure and Microscopy
Why is a stain such as iodine used when preparing a slide?

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