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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 3.3   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 3.8.4   Jim is 34 years old. Calculate his maximum heart rate. Show all calculations.  (1)

Question 3.4   What do valves do? (1)

Question 3.8.2   Use the graph in Question 3.8.1 to help you answer the question.   What happened to Jim’s heart rate in the first five minutes that he was running? Give an explanation for your answer. (2)

Question 1.6.2   Use the different leaves in the previous question and design a classification key to show how you will classify these leaves. Use the following checklist to guide you: Started with one question. Used different questions to identify the leaves. Ended with one classification for each leaf. (4)     Upload Image Here  

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)

Question 3.2   The diagram below shows a section through the respiratory system (the lungs).   Click on the button below to open the picture of the lungs.     From which labelled part is oxygen absorbed into blood? [ans1] (1)

Question 3.5   When blood leaves the heart and is pumped around the whole body, what is it carrying? [ans1] (1)