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A gene is a section of DNA (can explain DNA if necessary). Genes are responsible for making the different proteins that carry out different functions in our body.They can be inherited, passed on to fut...

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 ...

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 ...

A reflex is an innate (in built) action designed to keep an organism safe from harm.  A good example of a reflex is to imagine you touch a hot pan, you immendiately withdraw your hand from the painful ...

Answering questions in biology that offer more marks is all about key words - usually the examiner has a few of these in front of them that offer a mark simply for using the word in your answer. The go...