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It is composed of Protons, Neutrons and Electrons.
The Proton is positively charged and is present in the central nucleus part of the atom.The Neutron has no charge and also is present in the nucleus...

Firstly we need to understand what the question is asking us to do. Factorise means we need to take out the Highest Common Factor (HCF) that each term can be divided by.The two terms in this question is 3...

In the population of a species there will always be a selection pressure (new predator/competitor/ presence of disease) There is genetic variation within the population so new alleles can arise due to ran...

The first ionisation energy is defined as the energy required to remove one mole of electrons from each atom of a mole of gaseous atoms. As we go along a period in the periodic table, the atomic number in...

DNA replication is called semi-conservative, because each original strand is used to create a new strand. In order to do this, first we need to separate the two strands: they are unwound and unzipped by t...