Search over 10,000 free study notes

An excitation signal (an action potential) is created by the sinoatrial (SA) node.The wave of excitation spreads across the atria,causing them to contract.Upon reaching the atrioventricular (AV) node, the...

The turning effect (or moment) of a force can be calculated using this equation:
moment of a force = force (F) x perpendicular distance from the pivot (d)
So in this case, the m...

In order to make sure that safety precautions are met, when handling blood samples we must make use of gloves in order to cover all cuts and avoid contact. Furthermore, you must store samples in sealed co...

Respiration: Glucose + Oxygen --> Water + Carbon Dioxide + EnergyIf there is a lack of oxygen then anaerobic respiration will take place instead of aerobic respiration, which in animal...

1. Within a population of bacteria, one bacterium undergoes a random mutation in it’s DNA resulting it it having antibiotic resistance. The chance of this mutation happening can be increased by the ove...