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When a person is vaccinated, a small amount of dead or inactive pathogen (that they are being vaccinated against) is introduced into their body. This stimulates the white blood cells to produce antibodies...

RNA is single stranded, whereas DNA is double stranded. RNA has a uracil base instead of DNA's thymine base. RNA has a ribose sugar, whereas DNA has a deoxyribose sugar.

The pumping of the heart is split into two main phases, diastole (relaxation) and systole (contraction) and involves the four main chambers of the heart, the atria and ventricles, as well as the associate...

Oxygen enters the nose/mouth along the trachea, bronchi, bronchioles and finally into the alveoli.The exchange of gases occurs between the alveoli and blood in the capillaries that supply the lungs. Capil...

For your GCSE, you need to know that there are three main differences between plant and animal cells:Plant cells have a cellulose cell wall while animal cells do not.Plant cells have chlo...