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Firstly we need to get all the x's on one side and the numbers on the other side. So if we add 2 to both sides we get 5x > 3x + 13. Now as we want the x's on the right hand side, we need to subtract bo...

A mutation arises in an individual that confers a selective advantage.  The phenotype the mutation produces is selected for by natural selection and so the individual survives to reproductive age.  This m...

The reaction between calcium carbonate and hydrochloric acid produces carbon dioxide.  The carbon dioxide could be collected in a gas syringe or in a measuring tube inverted and filled with water.  The ra...

Plant cells possess a membrane bound nucleus that acts as the control centre of a cell.  They also possess a vacuole which controls water balance in the cell.  The chloroplasts are the site of photosynthe...

Foreign cells that enter the body have antigens on the outside of them which will be complementary to a specific antibody. The antibody can bind to the antigen, forming an antigen-antibody complex, and th...