Pearson Edexcel Level 1/Level 2 GCSE (9 - 1) Combined Science
Write your name here
Surname
Other names
Centre Number
Pearson Edexcel Level 1/Level 2 GCSE (9 - 1)
Candidate Number
Combined Science
Paper 2: Biology 2
Monday 11 June 2018 ? Morning Time: 1 hour 10 minutes
You must have: Calculator, ruler
Foundation Tier
Paper Reference
1SC0/2BF
Total Marks
Instructions
Use black ink or ball-point pen.
?? Fill in the boxes at the top of this page with your name, centre number and candidate number. Answer all questions.
?? Answer the questions in the spaces provided ? there may be more space than you need. Calculators may be used.
? Any diagrams may NOT be accurately drawn, unless otherwise indicated. ?? You must show all your working out with your answer clearly identified at
the end of your solution.
Information
The total mark for this paper is 60.
?? The marks for each question are shown in brackets ? ? use this as a guide as to how much time to spend on each question.
In questions marked with an asterisk (*), marks will be awarded for your ability to structure your answer logically showing how the points that you make are related or follow on from each other where appropriate.
Advice
Read each question carefully before you start to answer it.
? Try to answer every question. ?? Check your answers if you have time at the end.
Turn over
P59180A
?2018 Pearson Education Ltd.
1/
*P59180A0124*
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
Answer ALL questions. Write your answers in the spaces provided.
Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then
mark your new answer with a cross .
1 Insulin is produced by an endocrine gland and is transported in the blood.
(a) (i) Which row shows the endocrine gland and the target organs for insulin? (1)
endocrine gland A adrenal B adrenal C pancreas D pancreas
target organs liver and muscles small and large intestines liver and muscles small and large intestines
(ii) Which part of the blood transports insulin to its target organs? (1)
A plasma
B red blood cells
C white blood cells
D platelets
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
2
*P59180A0224*
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
(b) Figure 1 shows the blood glucose and blood insulin concentration for a healthy person during one day.
Key blood glucose
blood insulin
concentration in blood
breakfast
lunch
dinner
morning
midday
evening
Figure 1
The blood glucose concentration increases after a meal.
Explain why the blood glucose concentration then decreases. (2)
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
(c) State one cause of type 1 diabetes. (1)
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
*P59180A0324*
3
Turn over
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
(d) Explain how controlling the diet can be used to treat type 2 diabetes. (2)
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................................................................
(e) A scientist is planning to test a new treatment for type 2 diabetes. She selects 300 volunteers who have type 2 diabetes. State two other factors that the scientist should consider when selecting the 300 volunteers. (2)
1 ............................................................................................................................................................................................................................................................................... 2 ...............................................................................................................................................................................................................................................................................
(Total for Question 1 = 9 marks)
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
4
*P59180A0424*
2 (a) Figure 2 shows alveoli from a healthy lung.
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
Figure 2 Smoking can cause a condition called emphysema. Figure 3 shows alveoli from a person with emphysema.
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA
Figure 3
Use words from the box to complete the following sentences. (2)
breathing osmosis
diffusion smaller
larger thicker
The alveoli from the person with emphysema have a .............................................................................. surface area than the alveoli from a healthy lung. The surface area of the alveoli will affect how much oxygen moves into the blood by the process of . ..............................................................................
*P59180A0524*
5
Turn over
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- pearson edexcel level 1 level 2 gcse 9 1 chemistry
- pearson edexcel level 1 level 2 gcse 9 1
- gcse 9 1 pearson qualifications edexcel btec lcci and edi
- faqs for changes to pearson edexcel level 1 level 2 international gcse
- pearson edexcel level 1 level 2 gcse 9 1 combined science
- level 1 level 2 gcse 9 1 wednesday 12 june 2019
- pearson edexcel level 1 level 2 gcse 9 1 english language
- pearson edexcel international gcse 9 1 thursday 14 january 2021
- pearson edexcel level 1 level 2 gcse 9 1 religious studies a
- pearson edexcel level 1 level 2 gcse 9 1 mathematics
Related searches
- form 1 combined science textbook 1
- gcse 9 1 combined science pearson qualifications
- form 1 combined science notes pdf
- revise edexcel gcse 9 1 biology higher revision guide
- second edition gcse 9 1 computer science teacher s workbook
- aqa gcse 9 1 combined science trilogy
- pearson edexcel level 1 2 2021
- pearson edexcel level 1 2 mathematics 2021
- pearson edexcel level 1 level 2 gcse 9 1 mathematics
- pearson edexcel level 1 level 2 gcse 9 1
- pearson edexcel level 1 level 2 gcse 9 1 mathematics markscheme
- pearson edexcel level 1 level 2 gcse 9 1 mathematics markscheme 2021