protein synthesis

Nucleus

• DNA contains instructions for making the enzymes (a protein)

• mRNA - copy of DNA instructions (the process of making the copy is called transcription)

• mRNA leaves the nucleus

rough endoplasmic reticulum

• ribosomes use instructions in mRNA to synthesise protein

• proteins are made of amino acids

• synthesising proteins need energy from atop produced by mitochondria (ATP is broken down for the energy to be produced)

• completed enzyme is packed into a vesicle

• ribosomes use instructions on mRNA to synthesise protein from amino acids using energy from ATP produced by mitochondria

• completed enzyme is packed into a vesicle

• the packed vesicle then travels to Golgi apparatus

Golgi apparatus

• the enzyme is modified and the structure is changed

• enzyme is packed again into a vesicle

• vesicle moves towards the cell membrane

• enzyme is then released outside cell

• the process is called exocytosis

watched a video on protein synthesis and here are the notes from that: