Search over 10,000 free study notes

Think of tumour suppressor genes and oncogenes like the pedals used to operate a car. Oncogenes are mutated forms of proto-oncogenes. Normally, these proto-oncogenes act like the gas pedal, and allow the ...

First of all, the stimulus (a change in environment) will cause the receptor in the skin to fire an action potential down the sensory neurone. The sensory neurone then reaches the relay neurone in the CNS...

Both are processes of cell division in which one cell splits. In mitosis two genetically identical daughter cells are produced. In mitosis the 46 chromosomes within a cell (human) are duplicated, then one...

Imagine DNA Ligase to be like glue. It brings all the molecules of the newly formed DNA or RNA strands together and permanently binds them with a phosphodiester bond, so that they dont just fall apart. It...

Firstly we need to understand the structure of membranes. Cell membranes are made up of phospholipids. These are molecules with a hydrophilic head (it “likes water”) and hydrophobic tail (which “doesn’t l...