Paper Reference (complete below) Additional Science (5016F) Biology (5028F) B2 Topics 1 to 4. Foundation Tier

Transcription

1 Centre No. Paper Reference (complete below) Surname Initial(s) Candidate No. F 1 F Signature Paper Reference(s) 5016F/1F 5028F/1F Edexcel GCSE Additional Science (5016F) Biology (5028F) B2 Topics 1 to 4 Foundation Tier Wednesday 2 March 2011 Morning Time: 30 minutes Materials required for examination Nil Items included with question papers Nil Examiner s use only Team Leader s use only Question Number Blank Instructions to Candidates In the boxes above, write your centre number, candidate number, your surname, initial(s) and signature, and complete the paper reference. Check that you have the correct question paper. Answer ALL the questions. Write your answers in the spaces provided in this question paper. Do not use pencil. Use black ink. Show all stages in any calculations and state the units. Calculators may be used. Include diagrams in your answers where these are helpful. Information for Candidates The marks for individual questions and the parts of questions are shown in round brackets: e.g. (2). There are 8 questions in this question paper. The total mark for this paper is 30. There are 12 pages in this question paper. Any pages are indicated. Advice to Candidates You are reminded of the importance of clear English and careful presentation in your answers. This publication may be reproduced only in accordance with Edexcel Limited copyright policy Edexcel Limited. Printer s Log. No. P38444A W850/R1536/ /1/1/1/ *P38444A0112* Total Turn over

2 1. Draw one straight line from each word to its correct meaning. One has been done for you. word correct meaning embryo a male gamete collection of cells that develop after fertilisation fetus the name for an embryo when it is eight weeks old and has human features sperm a female gamete Q1 (Total 2 marks) 2 *P38444A0212*

3 2. The human breathing system. windpipe lung diaphragm When we breathe in the diaphragm moves to make the volume of the chest cavity larger. (a) On the diagram, draw the new position of the diaphragm when we have breathed in. (1) (b) (i) Use words from the box to complete the sentences. diffusion into lungs out of ventilation windpipe When we inhale, air is moved... our lungs. The air travels down the..., into the bronchi and then the alveoli (air sacs). In the alveoli, gases are exchanged by the process of... (3) *P38444A0312* 3 Turn over

4 (ii) After air has been breathed into the lungs, the blood absorbs oxygen and carries it to muscle cells. blood muscle cell oxygen from blood Describe how the muscle cell uses oxygen (2) Q2 (Total 6 marks) 4 *P38444A0412*

5 3. Harry grows plants in his greenhouse. Each day, Harry goes to his greenhouse. Here are three things he could do. open the window to prevent the greenhouse from getting too hot put ladybirds into the greenhouse (ladybirds are predators of some plant pests) water the plants with water containing fertiliser Write yes or no in the boxes to show how these activities will affect the plants growing in the greenhouse. One in each row has been done for you. activity allows plants to make proteins reduces the numbers of plant pests reduces the problem of plants drying out opening the window yes adding ladybirds no watering the plants with water containing fertiliser yes (Total 3 marks) Q3 *P38444A0512* 5 Turn over

6 4. This information is from a newspaper in November Heavy rainfall in the north of England has swept away bridges and caused flooding in hundreds of villages and towns. The graph shows the annual average rainfall for each five year period from 1950 to 2009 in part of the north of England. annual average rainfall in mm five year period (a) Describe the overall trend from 1950 to 1979 as shown in the graph. (1) (b) Use the graph to estimate the rainfall for the period (1) 6 *P38444A0612*

7 (c) Here is a food chain for a moorland in the north of England. grass seeds small birds birds of prey Some birds of prey will die if they get too wet. Kay thinks about how the increasing rainfall will affect the food chain. The increasing wet weather should increase the number of small birds in the north of England. Explain why Kay may be correct. (2) Q4 (Total 4 marks) *P38444A0712* 7 Turn over

8 5. Billy and Amy discuss recycling paper. Why don t we just recycle the paper we have over and over again. It is not that easy, Billy. You can t recycle all paper. Billy Amy (a) Suggest two reasons why paper cannot be recycled over and over again (2) (b) State one cost involved in recycling paper. (1) (c) Suggest two conservation management techniques that would help to increase the amount of wood available for paper production (2) Q5 (Total 5 marks) 8 *P38444A0812*

9 6. Complete the table by stating the functions of the parts of a plant cell. part of plant cell function cellulose cell wall chloroplast vacuole cell membrane Q6 (Total 4 marks) *P38444A0912* 9 Turn over

10 7. Describe the shape of the DNA molecule Q7 (Total 2 marks) 10 *P38444A01012*

11 8. There are different layers in a rainforest. The emergent layer is made up of the tops of trees which grow above the rest of the forest. emergent layer canopy The table shows the layers of the rainforest and the percentage of the total sunlight at the top of the forest received by each layer. layer of rainforest percentage of the total sunlight received plant types living in layer emergent 100 trees more than 35m high canopy 99 trees from 25 to 35m high understory 15 small trees covered in orchids, mosses and ferns shrub 3 ferns and small green shrubs floor 1 a few small green plants (a) Suggest two reasons why most animals found in the rainforest live in the canopy (2) *P38444A01112* 11 Turn over

12 (b) Explain why plants are smaller in the lower layers of the rainforest. (2) Q8 (Total 4 marks) TOTAL FOR PAPER: 30 MARKS END 12 *P38444A01212*