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Immunity is the ability for the body to respond to familiar pathogens so quickly that they are not able to cause a physical disease, meaning we can be infected for a short period of time, and not notic...

Transpiration is the process in plants by which water travels in a stream from the roots to the leaves where it evaporates. The water is pulled up from the roots through the xylem via the cohesion-tens...

The cell cycle begins with interphase (G1,S G2) then follows on to mitosis and ends with cytokinesis.

G1 phase - Protein synthesis and preparation for DNA replication

The systemic circuit carries oxygenated blood from the heart around the body then carries the deoxygenated blood from the body back to the heart. The blood leaves the left ventr...

Mutations in genetic code occur naturally leading to different alleles in genes. (1 mark)

This leads to variation within a species. (1 m...