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Firstly, humans have a double circulatory system, which increases blood pressure and flow of blood to the tissues. To allow the heart to pump blood around the body, the heart is made of cardiac muscle. Th...

The cell membrane is a complex material made up of three main components: the phospholipid bilayer, proteins, and cholesterol. The tadpole-shaped phospholipid is made up of a phosphate head attached to a ...

Individuals within a species show a wide range of genetic variation. Some individuals will have characteristics more suited for their environment, meaning they are more likely to survive and reproduce. Th...

The Hardy-Weinberg equation is a model predicting allele frequency in an population, under the assumption that the frequency of alleles in a population does not change and will contribute...

Auxin is produced in higher concentrations in the shaded side of the plant, as auxin causes the cells to elongate and grow, the shaded side cells grow and elongate more than the non shaded side which caus...