GCSE Biology (Single Science)

Health is the state of physical and mental well-being. Factors can work together to both physical and mental health. A disease is a disorder that affects an organism’s body, organs, tissues or cells.

Our genes are inherited from our parents, and the different combinations of these genes make us unique. Genetic inheritance controls the characteristics of all living things.

Reproduction occurs in all organisms. DNA is important, as it allows new proteins to be synthesised. Mutations in the DNA can have serious implications.

Ecologists study the distribution of living organisms in habitats to find out how healthy it is. They use many different sampling methods to provide quantitative data which is then analysed.

The development of drugs is a long, complicated and expensive process. Monoclonal antibodies are identical copies of an antibody. They are used in pregnancy tests and in cancer treatment.

Hormones are vital to enable sexual reproduction in humans. There are a range of hormones that interact to cause puberty in males and females, and to prepare a woman’s reproductive system for pregnancy.