An organelle is a structure within a cell (subcellular) that preforms one or more specific functions within the cell. This…
In order to replicate a cell must create a fully copy of its DNA for the new cell. The replication…
DNA – Deoxyribonucleic Acid Mononucleotides The structure of DNA is made up of many single units called mononucleotides. Mononucleotides have…
The cardiac cycle consists of the hearts ventricles and atria contracting and relaxing to continuously pump blood around the body.…
The diagram below shows the internal structure of the heart. The yellow arrows show the direction of blood flow through…
Enzymes are biological catalysts that speed up the rate of chemical reactions within organisms. They do this by lowering the…
Proteins are large, complex molecules that have many functions within organisms, from catalysing reactions to being key components in cellular…
Carbohydrates are organic compounds consisting of carbon, hydrogen and oxygen atoms. They are the main energy source of organisms making…
Lipid – an organic compound consisting of carbon, hydrogen and oxygen atoms. They are hydrophobic and insoluble in water, however…
There are five types of blood vessels that work together to transport blood throughout the body. Blood vessels are a…