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Key Points: 1) Active transport requires energy in the form of ATP whereas facilitated diffusion does not require energy; it is a passive process 2) Active transport can move molec...

The cardiac cycle is driven by the myocytes in the heart, which are a special type of muscle tissue which are able to contract without input from the nervous system. This starts with a tissue called the S...

A contestable market is one in which there are low sunk costs. These are costs that are spent upon entry but cannot be recovered upon exit. Reasons why the market may be contestable is low operating costs...

A mole is like a dozen - it is a number of something. You can have a dozen people (12 people), a dozen oranges and so on. A dozen is useful for big objects like oranges, but atoms and molecules a...

The best way to approach the essay question in the exam is to have a more or less set structure in your mind before you go in which you can adapt to the question you choose to answer. Not only will this s...