1. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 1Different parts of the body have different functions. List A gives three organs. List B gives information about each organ. Draw one line from each organ in List A to information about the organ in List B. List A List B Organ Information gland produces a fluid that helps to regulate body temperature kidney produces hormones skin coordinates responses produces urine (3 marks)

2. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 2 A laboratory technician was cleaning out a cupboard. Dust from the cupboard made her sneeze. (a) In this response, dust is: A the coordinator B the effector C the receptor D the stimulus (1 mark) AD the stimulus

3. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (b) In this response, the receptor is in: A the brain B the eye C the nose D the spinal cord (1 mark) AC the nose (c) In this response, the coordinator is: A the brain B the nose C the spinal cord D a synapse (1 mark) AA the brain

4. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (d) Chemical transmitters are involved in: A sending impulses along sensory neurones B sending impulses across the gap between a sensory neurone and a relay neurone C sending impulses from one end of a relay neurone to the other D sending impulses from a motor neurone to a relay neurone (1 mark) AB sending impulses across the gap between a sensory neurone and a relay neurone

5. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 3Figure 1 shows the reported number of cases in UK hospitals of an infection with a pathogen called Clostridium difficile.

6. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (a) Describe as fully as you can the pattern shown by the data in the graph.(2 marks) ASteady rise to 2001 then a rapid rise to a maximum of 55 000 in 2006, followed by a fall in 2007. (b) Suggest an explanation for the change in the number of reported cases of Clostridium difficile infection between 1990 and 2005. (2 marks) ADecrease in hygiene standards and increased populations of resistant strain.

7. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (c) Suggest an explanation for the change in the number of reported cases of Clostridium difficile infection between 2006 and 2007.(2 marks) AHygiene improvements and increased public awareness.

8. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 4The passage contains information about the ‘morning-after’ pill.

9. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions

10. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (a) Some people regard this pill as an abortion-causing drug. Explain why. (1 mark) AIf it prevents a fertilised egg embedding in womb it effectively kills the fertilised egg, which has the potential to develop into a human/right to life.

11. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (b) (i) Some people think that this pill should only be available on prescription. Suggest why they think this. (1 mark) AThe possibility of side effects, the fact it could encourage promiscuity or irresponsible sexual behaviour, or maybe their own religious beliefs. (ii) Others say it should be freely available ‘over the counter’. Give two reasons why they think this.(2 marks) AWoman’s right of choice; it avoids a later (more dangerous) abortion.

12. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (c) Scientists are uncertain if the pill might cause abnormalities among unborn children. Suggest why. (2 marks) AThe sample size is small and the time-scale of use too short.

13. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 5Figure 2 shows the average amount of cholesterol in the blood of people at different ages.

14. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (a) What is the average blood cholesterol level for a 60-year-old woman? (1 mark) A6.1 mmol/l (b) Which group of people has the highest risk of developing heart disease? (1 mark) A65–74-year-old women (c) Give two factors that influence blood cholesterol level. (2 marks) ADiet; inheritance

15. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 6 Figure 3 shows how the concentrations of the hormones that control the menstrual cycle vary over 28 days.

16. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (a) Name: (i) hormone A (1 mark) AFSH (ii) hormone B (1 mark) Aoestrogen (b) Explain why hormone A can be used as a fertility drug. (2 marks) AStimulates eggs to mature in women whose (FSH) hormone level is too low.

17. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (c) Hormones similar in their effect to hormone B can be used as contraceptive drugs. Explain why. (2 marks) AInhibits production of FSH so that eggs do not mature.

18. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 7 Figure 4 shows the number of cases of influenza in a large city in the UK.

19. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (a) The number of cases of influenza decreased between 1990 and 1998. Suggest an explanation for this. (2 marks) AMore people are immune due to previous exposure/infection. (b) Suggest an explanation for the large increase in the number of cases in 1999. (2 marks) AThe flu virus mutated and antibodies did not recognise the mutant.

20. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions (c) Most people who get flu recover in a few weeks. Explain why. (2 marks) AWhite cells produce antibodies, which kill the virus. (d) Explain in detail why a person who has been vaccinated against flu may still catch the disease. (6 marks) AThe flu virus mutates, and white blood cells do not recognise mutated virus. The antibodies are ineffective against the new virus. The virus multiplies before appropriate antibodies can be formed, and the toxins released when infected cells burst produce flu symptoms.

21. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions 8 Figure 5 shows bacteria being transferred from one Petri dish, B, to another, C.

22. © Pearson Education Ltd 2011. Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. B1: 1 & 2 – Assess yourself questions Describe fully the procedures you would use with the apparatus shown in the diagram to transfer bacteria from dish B to dish C. Give the reason for each of the procedures you describe. (6 marks) In this question you will be assessed on using good English, organising information clearly and using specialist terms where appropriate. AInoculating loop is held in the flame, to kill any microorganisms. The loop is cooled, so that bacteria in B are not killed when sampled. The lid of C is lifted only slightly to transfer, to prevent contamination from the air.