What is the centre of an atom called?
What is in the centre of an atom?
How many chromosomes are there in a 'normal' body cell?
How many chromosomes are there in sperm and egg cells
Name the part of the microscope you put your eye against
Name the part of the microscope near the object/sample.
What process does water use to move into a plant cell?
If a device has 90J of energy going into it and 30J of wasted energy, how much useful energy does it have?
Conservation of energy means that the energy at the end of a transfer is....... as at the beginning
An isotope has a different number of ....