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We can understand this using an idea called the Kinetic Model of Gases . Basically, let's assume that every molecule in the gas is a tiny, tiny snooker ball whizzing around the container. These 'snooker ball...

The key to being able to answer this question is having good memory tricks in place. In this case, connecting lipase with lipid in your mind will help you recall that lipases digest fats and so that cannot b...

First we need to multiply out the bracket 7k-21=3k-5 Then we must make sure our variable is only on one side so we need to deduct 3k from both sides 4k-21=-5 Now we should isolate our variable so add 21 to b...

First think how you would solve this if it was simply an '=' sign instead of a > Deduct 5 from both sides This would give us 6y>3 Divide both sides by 6 Think: because this is an inequality, is the val...

Phospholipids are arranged in a bilayer (a double layer). They have hydrophobic tailss (made of fatty acids) and hydrophilic heads (made of a phosphate group). The hydrophilic heads are to the outside and th...