2

Section A ------------------

Biology

1. In humans, red hair is determined by the recessive allele (h) and non-red hair by the dominant allele(H).

The following family tree shows the inheritance of hair colour.

(a) Use the family tree to complete the following table. (2)

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(b) Individuals B and D have a child together.

(i) Complete the Punnett square below to show the genotypes of their gametes and the possible

genotypes of their child. (2)

(ii) Calculate the percentage chance of their child having red hair. (1)

Space for calculation

..................................%

(Total for Question 1= 5marks)

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2. (a) The diagram below represents a cell in an early stage of mitosis.

(i) State the number of chromosomes present in this cell. (1)

...............................................................................................

(ii) State how many chromosomes will be present in each of the two cells produced by the

process (1)

............................................................................................

(b) (i) What is the importance of meiosis? (1)

............................................................................................................................................

(ii) How many cells are formed by meiosis? (1)

......................................................................

(Total for Question 2= 4 marks)

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3 A group of pupils recorded some different characteristics of pupils in their class.

The table below shows their results.

(a)(i) Name two continuous variables in their table. (1)

1. .....................................................

2. .....................................................

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(ii) Which of the features mentioned in the above table could be affected by the environment?

(2)

................................................................................................................................................

................................................................................................................................................

(b) Plot a suitable bar graph on the grid below to show the variations of the height of the pupils in this

sample. (4)

(Total for Question 3= 7 marks )

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4 . The peppered moth Biston betularia is predated by small birds which find them resting on the surfaces of

walls and trees. These surfaces can be darkened by air pollution.

The diagram below shows light and melanic varieties of the peppered moth resting

on the surface of a tree not darkened by pollution.

(a) An investigation to measure the percentages of the two varieties in moth populations from an

unpolluted rural area and a polluted industrial area was carried out and the results shown in the table

below.

(i)

Explain the results for the polluted industrial area in terms of natural selection. (2)

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

(ii) The two varieties of the peppered moth remain members of the same species.

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Describe evidence which would confirm this statement. (1)

...........................................................................................................................................

...........................................................................................................................................

...........................................................................................................................................

(b) The graph below shows the average number of peppered moths counted in June of each year in a

10 year study.

Use

data

from

the

graph

to

describe the change in the average number of dark moths during the study.

(2)

................................................................................................................................................

................................................................................................................................................

(Total for Question 4= 5 marks )

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5 (a) Genetic engineering is used to produce growth hormone. The growth hormone gene is identified and

removed from a human chromosome. This gene is then used in the genetic engineering process which

involves a number of stages.

The table below shows the stages but they are not in the correct order.

(i) Complete the table, entering a number (2 to 5) in each remaining box, to show the correct order for

each stage. (1)

(ii) Name another product of genetic engineering. (1)

...............................................................................................................................

(iii) State the effect of genetic engineering on the rate of production and the range of products.

(1)

Rate of production.................................................................................................

Range of products .................................................................................................

Tick () the correct box.

(b ) Which of the following is an example of selective breeding? (1)

A Increasing milk yield in dairy cattle

B Industrial melanism in Peppered moths

C Production of growth hormone by bacteria

D Insertion of DNA into a bacterium

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(c) The total variety of all living things on Earth is described as (1)

A an ecosystem

B biodiversity

C a community

D random assortment

(Total for Question 5= 5 marks )

6 (a) The quagga is an extinct animal that lived in Africa. Quaggas belonged to the same group as zebras.

The drawings below show a zebra and a quagga

These days there are some zebras that still show some quagga features.

Scientists are using zebras to try to produce quaggas by selective breeding.

Describe the steps in this selective breeding process. (3)

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

................................................................................................................................................

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(b) Nisssar crossed two blue-flowering plants. The genetic diagram below shows how the alleles present in

the offspring were inherited.

B- allele for blue flower , b - allele for white flower

Complete the diagram by writing the correct letters in the circles and joining them. (2)

(c) Nissar took cuttings of one of the plants. This produced six clones of the parent plant. He planted them in

different parts of the garden. After two months he measured the height of each plant. Here are his results.

Plant A B C D E F

Height(cm

)

2

5

1

6

1

8

2

7

2

1

1

3

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(i)Why are the cuttings clones of the parent plant? (1)

..................................................................................................................................................

..................................................................................................................................................

...................................................................................................................................................

(ii)What would you expect to find when you measured the heights of the cuttings if they had been grown

under the same conditions? (1)

.................................................................................................................................................

(Total for Question 6= 7 marks )

Total marks for section A = 33 marks

13

Section B ------------------

Chemistry

07. Answer the following questions using the part of periodic table given below.

(a) By ignoring the presence of the elements in the 4th

period, shade using your pencil, two groups

which are all non-metals in the periodic table given above. (2)

(b) Allotropy is the property of some chemical elements to exist in two or more different forms.

Carbon has an allotrope which conducts electricity. Name this allotrope. (1)

………………………………………………………………………………………………………

(c) All the elements that belong to group 8 are gases are called noble gases. Why are they referred to

in this name? (1)

………………………………………………………………………………………………………

(d) What is the liquid metal that is used in a thermometer? (1)

………………………………………………………………………………………………………

(e) What is the charge of group 2 elements? (1) (Your answer to this should contain a number and the symbol either ‘+’ or ‘-’)

…………………………………………………………………….…………………………………

(Total 06 marks)

1st Period

2nd

Period

3rd

Period

4th

Period

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08. The drawings below show six objects made from different materials.

(a) Fill the gaps in the sentences below. (5)

The above objects are made from elements that are all types of …………………….. All the objects

are good conductors of electricity and ……………………….. The copper bracelet can be

hammered into shape without cracking. We call this property as ….……………………….… It is

difficult to melt these items as they have high …………………………………………………. The

steel paper-clip can be drawn into a wire and that property is called ………………………………..

(b) The drawing below shows part of an electric cable and a plug.

(i) What material could be put around the wires to insulate them? (1)

…………………………………………………………………………………………………

(ii) Why is this insulating material needed? (1)

…………………………………………………………………………………………………

…………………………………………………………………………………………………

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(c) Which pair of objects is attracted to a magnet? Tick the correct box. (1)

(d) Complete the following chart using the most appropriate word/s given in the following list. (3)

carbon, High boiling points, silver, shiny surfaces, aluminium, Good conductor of heat, steel

(Total 11 marks)

09. Kamal’s teacher said that it is easy to write chemical equations if you know the common equations

that follow. It is given that carbonate CO32-

, hydroxide OH- , nitrate NO3

- & sulphate SO4

2-

(a) For the following chemicals write their chemical formula. (2)

(i) potassium carbonate ……………………………….…………………..

(ii) calcium hydroxide ……………………………………………………

(b) Complete the following chemical reactions. Balancing not required. (2)

(i) LiOH + H2SO4

(ii) Be + HCl

Use Metal Purpose

Railway Tracks

High strength and less expensive

Jewellery Gold

Overhead power cables Less expensive and light weight

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(c) Balance the following chemical reactions. Ensure the simplest ratio between compounds is

maintained. (2)

(i) Na2O + HCl NaCl + H2O

(ii) Al2(CO3)3 + HNO3 Al(NO3)3 + H2O + CO2

(Total 6 marks)

10. The diagram shows the reactions of some metals with cold water and with dilute hydrochloric acid.

(a) Answer the following questions, using only the metals that appear in the diagrams.

(i) Name two metals that react with cold water. (2)

……………………………………………………………………………………………………

……………………………………………………………………………………………………

(ii) Name one metal that reacts with dilute hydrochloric acid but not with cold water. (1)

……………………………………………………………………………………………………

(iii) Arrange the five metals in order of reactivity. (3)

Most reactive metal ..............................................................................

..............................................................................

..............................................................................

..............................................................................

Least reactive metal ..............................................................................

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(b) Some magnesium powder is added to dilute sulfuric acid in a test tube. A colourless solution is

formed and a gas is given off. When a flame is placed at the mouth of the test tube, the gas burns

with a squeaky pop. Identify the gas produced. (1)

……………………………………………………………………………………………………….

(c) In some fireworks, magnesium powder reacts quickly with oxygen in the air and forms a white

colour solid. Write a word equation for this reaction. (1)

………………………………………………………………..…………………………………….

(Total 8 marks)

11. Michelle mixed zinc with copper sulphate solution in a test-tube

The word equation for the reaction is shown below.

zinc + copper sulphate zinc sulphate + copper

(a) What is the name given to this type of reactions? (1)

……………………………………………………………..………………………………………….

(b) If the metal sodium is used instead of zinc to react with the copper sulphate, will a reaction

happen? Explain your answers as to why it happens or why does it not happen. (2)

………………………………………………………………..………………………………………….

………………………………………………………………..………………………………………….

………………………………………………………………..………………………………………….

………………………………………………………………..………………………………………….

(Total 3 marks)

Total marks for section B = 34 marks

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Section C ------------------

Physics

12. (a) In 2002 a large asteroid was discovered orbiting the Sun.

It was named Quaoar.

The diagram below shows Quaoar in four positions in its orbit.

(i) In which of the four positions, A, B, C or D, is the effect of the Sun’s

gravity on Quaoar the greatest? Explain your answer. (1)

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………….……

(ii) On the diagram above, draw arrows to show the direction of the

Sun’s gravity on Quaoar in each of the positions A, B, C and D. (1)

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(iii) At which position, A, B, C or D, is Quaoar travelling most slowly? (1)

……………………………………………………………………………………………

Explain your answer. (1)

……………………………………………………………………………………………

……………………………………………………………………………………………

(b) The table below gives information about three of the planets in our solar system.

(i) The time for one orbit of the planet Neptune is 165 Earth years.

Estimate the average distance of Neptune from the Sun.

Use information in the table to help you. (1)

………………………………………. millions of km

(ii) How does the surface temperature of these planets vary with

distance from the Sun?

Use information in the table to help you. (1)

…………………………………………………………………………………………….

…………………………………………………………………………………………….

(iii) Explain why the temperature varies with distance from the Sun in this way. (1)

…….…………………………………………………………………………………….

…………………………………….…………………………………………………….

(Total 07 marks)

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13. The drawing below shows a garden water feature. It is solar-powered.

The solar cell absorbs energy from the Sun. The solar cell is connected to a motor in the

bowl. The motor drives a pump. Water is pumped up to the jug and it flows back down to

the bowl.

(a) Use the information above to help you to complete the following sentences. Choose words from

the list.

(i) The useful energy change in the solar cell is from

light to ____________________ energy. (1)

(ii) The useful energy change in the motor is from

electrical energy to ____________________ energy. (1)

(iii) As the water flows from the jug to the bowl ____________________

energy is changed into ____________________ energy. (2)

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(b) Give one advantage and one disadvantage of using a solar cell to power the water feature.

(2)

Advantage …………………………………………………………………………………..

………………………………………………………………………………….……………

Disadvantage .……..………………………………………………………………………..

………………………………………………………………….……………………………

(Total 06 marks)

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14. The drawings below show Caroline diving into a swimming pool.

As she falls, gravitational potential energy is changed into kinetic energy.

(a) Why does Caroline have no kinetic energy at A? (1)

……………………………………………………………………………………………

……………………………………………………………………………………………

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(b) The table shows Caroline’s gravitational potential energy and

kinetic energy at four stages of the dive

(i) Write the missing kinetic energy value for stage D in the table. (1)

(ii) As Caroline falls there is no loss of energy to the air.

How do the energy values for stages A, B, C and D show this? (1)

…………………………………………………………………………………………..

(c) (i) Give the name of the force that causes Caroline to speed up as

she falls. (1)

…………………………………………………………………………………………..

(ii) Caroline takes 0.5 s to fall from A to B and from B to C and from C to D. How can

you tell from the drawings opposite that she is speeding up as she falls? (1)

…………………………………………………………………………………………..

…………………………………………………………………………………………..

(d) When Caroline enters the water she slows down. Give the name of the force that slows

her down. (1)

……………………………………………………………………………………………..

……………………………………………………………………………………………..

(Total 06 marks)

24

15. (a) Complete the table. (5)

(b) Calculate the total energy consumption for the month (30 days). (2)

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

(c) Cost per one kilowatt hour is 10p. Calculate the total electricity bill for the month in

pounds. (1 pound = 100 p) (2)

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

……………………………………………………………………………………………

(Total 09 marks)

Name of

appliance

Number of

appliances

Power in kW Duration(hours)

per day

Total

Energy(kWh) per

day

100W bulb 10 15

2000 W Fridge 1 24

500 W Television 1 4

1000 W Iron 1 0.5

2000 W AC 2 15

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16. Some pupils made an electric cell using two different metals and a lemon. They put strips of

copper and zinc into a lemon and connected them to the terminals of an electric clock.

(a) Look at the photograph.

What evidence is there that they have made an electric cell? (1)

……………………………………………………………………………………………

(b) The pupils had pieces of copper, zinc, iron and magnesium and some lemons. They

wanted to find out which pair of metals made the cell with the biggest voltage.

What equipment should they use to measure the voltage of their cells? (1)

…………………………………………………………………………………………

(c) In their investigation they used different pairs of metals.

Give one factor that they should keep the same. (1)

…………………………………………………………………………………………

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(d) The pupils measured the voltage produced by different pairs of metals.

Their results are recorded below.

Which pair of metals made the cell with the biggest voltage? (1)

…………………….and………………………….

(e) Look at the results in the table above. Why should the pupils not use pairs of the same type of

metal for the clock? (1)

………………………………………………………………………………………………

………………………………………………………………………………………………

(Total 05 marks)

Total marks for section C = 33 marks

Total marks for full paper = 100 marks