20 slide ppt looking at blood vessels, their features and associated problems. Worksheet available for use also. State the three main types of blood vessel – arteries, veins, and capillaries. Recognise types of blood vessel from diagrams. Explain how the structure relates to the functions of blood vessels. Explain in detail the importance of a double circulatory system.

Label the main structures in the gas exchange system – trachea, bronchi, alveoli and capillary network around alveoli. Explain how the alveoli are adapted for efficient gas exchange.

Power point and practical worksheet on measuring stomatal density and transpiration factors. Explain why there are more stomata on the lower surface of a leaf. Describe the role of stomata and guard cells to control water loss and gas exchange. Calculate number of stomata on leaves.

19 slide ppt on transpiration, translocation, links to photosynthesis. Describe the organs that make up the plant transport system. Describe the role of xylem, phloem & root hair cells & explain how they are adapted for their functions. Define the terms ‘transpiration’ & ‘translocation’.

Lesson power point outlining how to use a potometer - practical could be carried out but tends not to work. Lesson looks at factors which affect rate of transpiration and exam- style questions. Recognise the factors that affect transpiration. Describe how a potometer can be used to estimate the volume of water lost by a plant. Summarise adaptations to control water loss and explain how they work.

2 lesson power points one for more able (triple/combined) and one powerpoint for less able (c&a/trilogy). GCSE NEW SPEC - B5 - Lesson 1 - health and disease

Lesson power point on culturing microorganisms and a practical worksheet to guide students through procedure. GCSE NEW SPEC - B5 - Communicable diseases - BIOLOGY - culturing microganisms