Question 3.8.1   Jim uses a sensor to measure his heart rate before he starts running. He starts running and measures his heart rate every five minutes. After his run, he draws a graph.       Use the graph to help you answer the question.   Click on the button below to open the picture of the graph.     What is Jim’s heart rate before he starts running? beats per minute. (1)

Question 4.3   After nutrients have been broken down into smaller separate molecules, these molecules get absorbed into the body. Explain where the absorption of nutrients takes place and how it works. (2)

Question 5.1   When we eat unhealthy meals, it has a negative effect on our bodies. Name one disease which can risk increases with unhealthy eating. (1)

Question 3.8.3   Use the graph in Question 3.8.1 to help you answer the question.   Describe Jim’s heart rate between points X and Y on the graph. (1)

Question 3.1   Choose the correct answer. The three main parts of the body involved in the circulatory system:   a.  Blood, stomach, heart b.  Liver, muscles, lungs c.  Blood, lungs, heart (1)

Question 5 Answer the following questions regarding healthy and unhealthy lifestyles:

Question 5.2   Exercising has a positive impact on our heart, blood vessels and lungs. Explain how exercise can decrease the risk of heart disease. (2)

QUESTION 2:   A bag contains 5 red balls and 3 blue balls. Chris takes three balls at random from the bag, without replacement.   2.1 Sketch a tree diagram representing the events of taking the balls out of the bag. (Include all probabilities) (3) 2.2 Show that the probability of drawing exactly one red ball is . (4)      

ANSWER ALL QUESTIONS ON FOLIO LINE PAPER

QUESTION 3:   Mr. and Mrs. Ahmed with their two children, and Mr. and Mrs. Baker with their three children, are visiting an activity centre together. They will divide into groups for some of their activities.   3.1 In how many ways can the 9 people be divided into a group of 6 and a group of 3? (3) 3.2 5 of the 9 people are selected at random for a particular activity. Find the probability that this group of five contains all three of the Baker children. (3) 3.3 All nine people stand in a line.     Find the number of arrangements in which Mr. Ahmed is not standing next to Mr. Baker.    (3) 3.4 Find the number of different arrangements in which there is exactly one person between Mr. Ahmed and Mr. Baker.    (3)