Daily Practice · GCSE Science

Daily Practice - GCSE Science

11th November 1994

5 questions · GCSE · 584 questions in this band

1
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?
2
Cell 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).
3
Cell Structure and Microscopy
Why is a stain such as iodine used when preparing a slide?
4
Cell Division and Stem Cells
What happens to the DNA before mitosis begins?
5
Transport in and out of Cells
Define osmosis.

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