Search over 10,000 free study notes

Enzymes are biological catalysts and speed up reactions happening inside organisms.
An increase in temperature increases the rate of enzyme activity and therefore rate of reaction up to a certain po...

Begin with an introduction establishing the question you are answering (including defining any of the terms that you will be focusing on) and what your main argument will be when addressing it. Think of t...

Biconcave shape- Increases the surface area of the red blood cell, meaning there is a greater surface over which diffusion of the gases being exchanged can occur (CO2/ O2).No nucleus- Allows red blood cel...

Exams such as GCSEs and A-Levels are all about ticking off boxes and jumping through hoops. The English education system is designed in such a way that it is best to approach English exams in regard to th...

Protein synthesis consists of two stages- transcription and translation. Transcription takes place in the nucleus- this is where a strand of mRNA is formed. A section of DNA is unwound by...