Test revision

For the test coming up this week (or after half-term if you're going on the Spanish trip), make sure you're comfortable with the following points.

• Why we need a balanced diet, and what can happen if it isn't balanced (i.e. one example of a problem associated with too much of a food group like carbs causing weight gain, and one associated with too little of a food group like not enough vitamin c causing scurvy.
• What metabolism means, and reasons why it changes.
• Reasons why we NEED cholesterol in our bodies.
• What pathogens are (viruses and bacteria).
• Ways pathogesn can get into our bodies, and how our bodies stop them doing this.
• Uses for bacteria that benefit society.
• What MRSA is and why it is a problem.
• How antibodies, antigens, pathogens and white blood cells work in relation to each other.
• What vaccines are and how they work.

Antibodies being released from a white blood cell and binding to the antigens of a pathogen.



Come and let me know if you ahve any questions, otherwise good luck!