Search over 10,000 free study notes

The surface area to volume ratio of an object will decrease as the size of the object increases. This means that a small object with a small volume will have a bigger surface area, as a proportion or frac...

Vaccination involves the injection of small amounts of a pathogen - a microbe that causes disease - that is either dead or modified to provoke an immune response. Although these pathogens cannot ca...

Bacteria are important in the carbon cycle, because they produce carbon dioxide by breaking down dead animal and plant matter. Therefore, they act as decomposers.Bacteria are important in the nitrogen cyc...

Both are forms of cell division. All 'normal' cells undergo mitosis to produce identical copies of themselves with the same number of chromosomes. This increase in cell number leads to growth/repair of ti...