Church of England School Headteacher: Mr A J W ilcock MA (Cantab)

Transcription

1 B I S H O P R A M S E Y Church of England School Headteacher: Mr A J W ilcock MA (Cantab) 2 nd November 2017 Dear Parent/Carer, Test Results for Biology B10 and B11 Recently your son/daughter completed 2 Biology tests lasting 30 minutes each Within all Year 11 classes results are expressed as an overall percentage with each test having a possible 30 marks We are writing to inform you that your son/daughter achieved below the class average in both of these tests and this raises concerns in regard to what they are likely to achieve in their final GCSE grade Your son/daughter should be aware of their level of achievement If however they are not, it will be discussed with them in the next available lesson To aid in the progress of your son/daughter, we feel that they would benefit from extra guided work to help address gaps in subject knowledge and provide them with further exam practice The work we would like them to complete and show to us is: 1 Using the videos on my-gcsesciencecom (list provided below) and the kerboodle interactive textbook, produce extra notes beyond what is in their exercise book 2 Complete the exam-questions associated to each my-gcsescience video 3 Using the mark-schemes, self-assess each exam question 4 Complete the attached examination-style questions My-gcsesciencecom videos to watch: The nervous system The Brain (Triple Biology only) The eye (Triple Biology only) Adrenaline and thyroxine (Triple Biology only) Controlling Blood Glucose Hormones in human reproduction Plant hormones (Triple Biology only) This work should be completed and brought to ZF2 on Monday 13 th November On Tuesday 7 th November Mr Aitken will be available in ZF2 from 3:30pm to offer any assistance/guidance to students Address: Hume Way, Ruislip, Middlesex HA4 8EE Telephone: Facsimile: office@bishopramseyschoolorg Website: wwwbishopramseyschoolorg Veritas Educational Trust is a Company limited by guarantee, registered in England and Wales Reg no:

2 If you wish to discuss this further, please do not hesitate to contact us by ing or Yours faithfully, Mr B Aitken Biology Department Mrs N Jeffries Head of Science

3 Triple Biology B10 and 11 intervention Name: Class: Date: Time: 43 minutes Marks: 42 marks Comments: Question 1 and 2 are for TRIPLE Biology students only

4 Q1(a) When a seed starts to grow, the young root grows downwards towards gravity The young shoot grows upwards, away from gravity (i) Name this type of plant response to gravity (ii) Give two reasons why it is useful for a young root to grow towards gravity 1 2 (2) (iii) The root grows towards gravity due to the unequal distribution of a substance in the root Draw a ring around the correct answer to complete the sentence This substance is auxin chlorophyll sugar (b) The drawings show some apparatus and materials

5 In this question you will be assessed on using good English, organising information clearly and using specialist terms where appropriate Describe how the students could use some or all of the apparatus and materials shown in the drawings to investigate the growth response of maize seedlings to light shining from one side You should include a description of the results you would expect

6 (6) (Total 10 marks)

7 Q2 Charles Darwin investigated tropisms in plants Some students did an investigation similar to Darwin s investigation The students: grew seeds until short shoots had grown used black plastic to cover parts of some of the shoots put the shoots in light coming from one direction put boxes over the shoots to keep out other light The diagrams show how the investigation was set up Two days later the students took off the black plastic covers and looked at the shoots The diagrams show the results (a) Give two variables that the students should control in this investigation

8 (2) (b) Shoot A bent towards the light as it grew Explain how (4) (c) What conclusions can be drawn from the results about: (i) the detection of the light stimulus

9 (ii) where in the shoot the response to the light takes place (Total 8 marks) Q3Glands in the body produce hormones (a) Use words from the box to label gland A and gland B on the diagram below Adrenal Pancreas Pituitary Testis Thyroid (2)

10 (b) Which gland produces oestrogen? Tick one box Ovary Pancreas Testis Thyroid (c) Table 1 shows some methods of contraception Table 1 Type of contraception Percentage (%) of pregnancies prevented Oral pill >99 Implant 99 Condom 98 Diaphragm <96 Which method of contraception in Table 1 is least effective at preventing pregnancy? (d) Which method of contraception in Table 1 will protect against sexually transmitted diseases like HIV?

11 (e) Another method of contraception is called the intrauterine device (IUD) There are two main types of IUD: copper plastic Both types of IUD are more than 99% effective Look at Table 2 Table 2 How the IUD works Copper IUD releases copper copper changes the fluids in the uterus to kill sperm Plastic IUD releases a hormone hormone thickens mucus from the cervix so the sperm have more difficulty swimming to the egg Benefits Possible side effects prevents pregnancy for up to 10 years can be removed at any time can be used as emergency contraception very painful periods heavy periods or periods which last for a long time feeling sick, back pain prevents pregnancy for up to 5 years can be removed at any time painful periods light periods or no periods feeling sick, headaches, breast pain, acne hormones may affect mood ovarian cysts Evaluate the use of the plastic IUD as a contraceptive compared to the copper IUD

12 Use the information in Table 2 (4) (Total 9 marks) Q4Homeostasis controls the internal conditions of the body (a) Explain how blood glucose levels are controlled in the body of someone who does not have diabetes

13 (4) (b) Compare how each type of diabetes is caused Suggest how each type of diabetes can be treated (4) (c) Look at the table below Population of UK in Number of people diagnosed with diabetes Estimated number of people with undiagnosed

14 diabetes Calculate the percentage (%) of the UK population estimated to have diabetes You should include both diagnosed and undiagnosed people in your calculation Give your answer to 2 significant figures Estimated percentage of population with diabetes = % (3) (d) A urine test can be used to check for the presence of glucose in the urine Diabetes can also be diagnosed with a blood test to measure the concentration of blood glucose Suggest why a blood test is more reliable than a urine test (e) A blood test called the glucose tolerance test checks how well the body processes glucose Concentrations of glucose in the blood are measured before and after drinking a glucose drink

15 Patients are not allowed to eat food for 8 hours before the glucose tolerance test Suggest why patients are not allowed to eat for 8 hours before the test (f) The diagram below shows the results of a glucose tolerance test for two patients, A and B Which patient has diabetes? Justify your answer Patient Justification

16 (2) (Total 15 marks)