Gateway Science Additional Science B Unit 1 Modules B3 C3 P3 Foundation Tier Thursday 14 June 2007

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GENERAL CERTIFICATE OF SECONDARY EDUCATION

GATEWAY SCIENCE ADDITIONAL SCIENCE B
Unit 1 Modules B3 C3 P3 FOUNDATION TIER THURSDAY 14 JUNE 2007 Calculators may be used. Additional materials: Pencil Ruler (cm/mm)

F

B623/01

*CUP/T30055*

Afternoon Time: 1 hour

INSTRUCTIONS TO CANDIDATES • • • • • • • Write your name, Centre Number and Candidate Number in the boxes above. Answer all the questions. Use blue or black ink. Pencil may be used for graphs and diagrams only. Read each question carefully and make sure you know what you have to do before starting your answer. Do not write in the bar code. Do not write outside the box bordering each page. WRITE YOUR ANSWER TO EACH QUESTION IN THE SPACE PROVIDED. ANSWERS WRITTEN ELSEWHERE WILL NOT BE MARKED.

INFORMATION FOR CANDIDATES • • • The number of marks for each question is given in brackets [ ] at the end of each question or part question. A list of physics equations is printed on page two. The Periodic Table is printed on the back page.

FOR EXAMINER’S USE Section Max. A B C TOTAL 20 20 20 60 Mark

This document consists of 20 printed pages.
SP (SLM/CGW) T30055/4 © OCR 2007 [Y/103/4529] OCR is an exempt Charity

[Turn over

2 EQUATIONS distance time taken change in speed time taken

speed =

acceleration =

force = mass × acceleration

work done = force × distance

power =

work done time voltage current

resistance =

© OCR 2007

3 Answer all the questions. Section A – Module B3

1

This question is about human growth. (a) The list shows the main phases of human growth. adolescence childhood infancy maturity old age Write out the phases in order of age. The last one has already been done for you. 1 ..................................................................... 2 ..................................................................... 3 ..................................................................... 4 ..................................................................... old age 5 ..................................................................... [2]

© OCR 2007

[Turn over for the remainder of question 1

4 (b) Kate and Steve are twins. The graph shows how their mass changes as they grow. 70 60 50 mass in kilograms 40 30 20 10 0 Kate

Steve

0

2

4

6

8

10

12

14

16

18

20

age in years (i) For how many years was Kate heavier than Steve? ..................................................................................................................................... [1] (ii) Between which ages was Steve growing at the fastest rate? ..................................................................................................................................... [1] [Total: 4]

© OCR 2007

5 2 Ann grows strawberry plants. Strawberry plants can reproduce sexually or asexually.

plantlet

(a) (i)

The table shows some of the stages when a strawberry plant reproduces asexually. Put the stages in the correct order. Write numbers in the table to show your answer. The first one has been done for you. stage Buds grow on the runners. The parent plant grows long stems called runners. The runners die. The plantlets on the runners grow roots. The buds on the runners grow leaves and become plantlets. [2] 1 order

(ii)

All of Ann’s strawberry plants have been produced by asexual reproduction. They are genetically identical. Why are they genetically identical? ........................................................................................................................................... ..................................................................................................................................... [1]

(b) Ann’s neighbour Harry grows apple trees. He has grown his apple trees from seeds. His trees are not genetically identical. Describe one advantage of Harry’s apple trees not being genetically identical....
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