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At low temperature, there is low kinetic energy (=molecules move more slowly). So, an enzyme and a substrate are less likely to randomly collide with eachother (similarly...

To expand the lungs and fill them with air, thoracic pressure decreases. This is done by the diaphragm contracting and flattening out and the external intercostal muscles raising the ribcage upwards and o...

Unlike mammals fish have water as their gas exchange medium instead of air. Fish use gills for gas exchange, gills are specialised flaps of tissue which have the following features to allow efficient gas ...

• basic anatomy of the heart: chambers, valves, structural difference between right and left side of the heart
  
• pulmonary vs. systemic circulation
  
• blood flow through the h...

Both mitosis and meiosis use cytokinesis for the division of genetic informaton between cells, however mitosis creates identical copies known as daughter cells after just one round of cell division, where...