Over recent years the balancing process between regulatory bodies has been highlighted by the media and has put the water industry in a spotlight that is likely to remain focused upon the water industry for a long time to come. The Cost of Quality debate has been successful in developing public and media attention on water bills and the financial impact of higher quality and environmental standards. At recent conferences leading figures from both major political parties contributed to the debate on regulation. For the Conservative Government Ian Lang, the President of the Board of Trade, confirmed that he would continue to interfere within the market while it was in a 'transitional phase.' Labour's John Battle referred to 'incentive-based price capping,' 'intra-industry and cross utility mergers' and 'vertical integration.'

1. What groups of living organisms form the protist kingdom?

2. What is the fundamental difference between protozoa and algae?

3. What characteristics of protozoa make them resemble animals?

4. What is the basic morphology of the cells of protozoa?

5. Do protozoa have a nucleus?

6. What are the respective functions of the macronucleus and of the micronucleus inparamecium?

7. What do protozoa "eat"? Do they move in search for food?

8. How amoebae, paramecia and trichomonas move?

9. How do protozoa digest?

10. Are protozoans presenting contractile vacuoles (also called pulsatile vacuoles) more commonly found in fresh or in salt water?