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Question 4.4   Nutrients and water are absorbed into the blood and the blood is circulated throughout the body. Explain what happens to the nutrients and water when it passes cells. (2)

Question 1.2   We sort living things into different groups at different levels. What is the name of the last level of groupings? [ans1] (1)

Question 2.5   Microorganisms can be useful. List two (2) different microorganisms and the how each microorganism can be useful to people. (4)

Question 1.4   Choose the correct answer.   Which animals produce milk to feed their young? [ans1] (1)

Question 4.1   Fill in correct words in the blank spaces: a.  Carbohydrate molecules get broken down into [ans1] molecules. b.  [Ans2] molecules get broken down into amino acid molecules. c.   [Ans3] molecules get broken down in [ans4] acids and glycerol molecules. (4)

Question 3.6   List the blood vessels in the circulatory system and describe the function of each. (2)

Question 3.8.4   Jim is 34 years old. Calculate his maximum heart rate. Show all calculations.  (1)

Question 3.3   Look at the diagram of the heart answer the following question below:        Click on the button below to open the picture of the heart.     Which part of the body do the pulmonary arteries and veins link to? [ans1] (1)    

Question 3.4   What do valves do? (1)

Question 2.2 Steve was cooking some chicken.   First, he took some fresh, raw (uncooked) chicken from the fridge and cut it up on the chopping board and put it in an air tight box. Then, he cooked some more fresh chicken from the fridge and, when it was cooked, cut it up on the same chopping board. Later he was very sick because of a microorganism called salmonella which had got into his stomach. Salmonella is found in chicken but is killed by hot temperatures. How did the salmonella get into his stomach? Give as much detail as you can. (2)