Search over 10,000 free study notes

Steroid hormones move across the cell membrane to enter the cell (they can move through easily as they are made of lipid and are therefore non-polar, and also are generally quite small). They bind to rece...

A myocardial infarction is a fancy term for a heart attack, which is a common life threatening condition. Just splitting the name up tells us whats happening beneath the surface. Myo means muscle, Cardial...

Helicase breaks hydrogen bonds between the 2 DNA strands to separate them1 DNA strand acts as template (the sense strand)Free RNA nucleotides then attach to exposed complementary bases on the sense strand...

Proteins are coded for by genes (a sequence of DNA that codes for a specific polypeptide), in the nucleus the DNA is unwound by an enzyme and then another enzyme with copy the template strand to make a mo...

a) Why do insulin levels rise? After we have eaten, the carbohydrates in the food are broken down to glucose, which is absorbed in our intestines. This means that the level of glucose in our blood rises a...