This section is Section 2 of 3.

Speed as well as accuracy is important in this section. Work quickly, or you might not finish the paper. There are no  penalties for incorrect responses, only marks for correct answers, so you should attempt all 27 questions. Each question is worth one mark.

You must complete the answers within the time limit. Calculators are NOT permitted.

Good Luck!

Note – if press “End Exam” you can access full worked solutions for all past paper questions

Which one of the following involves active transport?

1.
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    Explanation

    The correct answer is D.

    Post Comment

    Element Y forms an ion Y 3- with the electronic configuration 2, 8, 8.

    Group Period

    A

    3 3

    B

    3

    4

    C

    5

    3

    D

    5

    4

    E

    8

    3

    F

    8

    4

    2. To which group and period of the periodic table does Y belong?
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    Explanation

    The correct answer is C.

    Post Comment

    A radioactive isotope X decays into the stable isotope Y with a half-life of 20s.

     

    3. Which graph correctly shows how the mass (m) of Y present in an initially pure sample of X varies with time (t)?
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    Explanation

    The correct answer is B.

    Post Comment

    In the formula P = 2r²t

    r = 3 x 10                       t = 2.5 x 10

     

    4. Calculate the value of P. Leave your answer in standard form.
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    Explanation

    The correct answer is D.

    Post Comment

    In mice the recessive form of a gene causes the death of the fetus if present in the homozygous state. Mice heterozygous for this gene were crossbred.

    5. What percentage of the live offspring would be homozygous dominant?
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    Explanation

    The correct answer is C.

    Post Comment

    Look at the equation for making chlorine gas and decide which answer will provide you with the numbers to balance it

    aKMnO4 + bHCl ΠaKCl + aMnCl2 + xH2O + yCl2

    6.
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    Explanation

    The correct answer is E.

    Post Comment

    The nth term of a sequence is .

    7. What is the expression for the difference between the (n+1)th term and the nth term?
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    Explanation

    The correct answer is B.

    Post Comment

    The diagram shows a crane that lifts a load with a mass of 100 kg at a constant speed of 0.4 m/s for 5 seconds. (g=10 N/kg)

    Here are 3 statements about this activity:

    1. The gain in gravitational potential energy of the load is 2000 J.

    2. The tension in the cable at point P is 2000 N.

    3. The load accelerates at 10 m/s2.

    8. Which statements is/are true?
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    Explanation

    The correct answer is A.

    Post Comment

    The graph shows oxygen supply and demand in muscle cells during exercise.

    9. Which statement correctly describes what is happening in the muscle cells between 0 and 11 minutes?
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    Explanation

    The correct answer is D.

    Post Comment

    Which one of the following would not be formed by cracking the hydrocarbon C12H26?

    10.
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    Explanation

    The correct answer is C.

    Post Comment

    Here are four statements about radioactivity:

    1. A beta particle is an electron that is emitted from the outermost electron shell of an atom.

    2. A beta particle is emitted from the nucleus of the atom when a proton changes into an electron.

    3. A beta particle is emitted from the nucleus of the atom when a neutron changes into an electron.

    4. After a beta particle is emitted the mass number of the nucleus of the atom is unchanged.

    11. Which statement(s) is/are true?
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    Explanation

    The correct answer is D.

    Post Comment

    During the breakdown of a solution containing carbohydrates, proteins and lipids by carbohydrase, protease and lipase enzymes, the pH changed from neutral due to the products formed.

    Carbohydrate Protein Lipid
    A yes yes

    yes

    B

    no yes no
    C no no

    yes

    D

    yes yes no
    E no yes

    yes

    12. Which of the options, A to E, correctly shows which constituents contribute to the change in pH?
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    Explanation

    The correct answer is E.

    Post Comment

    In the diagram below, the triangles are congruent, PQ is a continuation of NL and both L and P are equidistant from the line X = 0 and from the line Y = 0.

    1. Reflection in the line y = 0

    2. Rotation of 90º about the origin

    3. Reflection in the line y = x

    4. Reflection in the line x = 0

    5. Rotation of 180º about the origin

    13. Of the transformations (1 to 5) described below, which one of the combinations (A to E) will map the triangle LMN onto the triangle PQR?
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    Explanation

    The correct answer is D.

    Post Comment

    In the manufacture of hydrogen from methane and steam, carbon monoxide is produced as an unwanted side product. The amount of carbon monoxide is reduced by mixing the gases with steam when the following reversible reaction takes place.

    CO (g) + H2O (g) ↔ CO2 (g) + H2 (g)     ∆H negative (exothermic)

    14. When this reaction reaches equilibrium, which of the following changes would result in more carbon monoxide being removed?
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    Explanation

    The correct answer is D.

    Post Comment

    A car is accelerated from rest along a horizontal road by a constant thrust force produced by the engine. The car eventually reaches a terminal speed, and the graphs below show the variation with time of three quantities (X, Y and Z) for the car:

    X Y Z

    A

    acceleration drag force kinetic energy
    B acceleration mass

    weight

    C

    potential energy velocity kinetic energy
    D potential energy drag force

    weight

    E

    resultant force mass kinetic energy
    F resultant force velocity

    weight

    15. Which line in the table could correctly identify the quantities X, Y and Z?
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    Explanation

    The correct answer is F.

    Post Comment

    A right-angled triangle is shown.

     

    16. Calculate the area of the triangle.
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    Explanation

    The correct answer is A.

    Post Comment

    The reflex arc enables the body to make rapid responses to certain stimuli.

    17. Which row in the table correctly identifies the elements 1 to 5 in the reflex arc shown above?
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    Explanation

    The correct answer is B.

    Post Comment

    The general formula for the alkane series is CnH2n+2

    The amide series has the same saturated structure as the alkanes but with one H substituted by the -CONH2 group.

    18. What is the general formula for the amide series?
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    Explanation

    The correct answer is F.

    Post Comment

    I stop while out walking and take the bearing of a windmill and note it as θ º. I then walk 5 km north and take the bearing again – it is now 2 θ.

    19. How far away, in km, was the windmill from the position where I took the first bearing?
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    Explanation

    The correct answer is C.

    Post Comment

    The diagram below shows three identical resistors and a battery that supplies a constant 12 V.

    With the switch open, as shown, the current in resistor Y is 20 mA.

    Current in Potential
      X (mA)

    difference

     

    across Z (V)

    A

    13 ⅓

    4

    B

    13 ⅓

    6

    C

    20

    4

    D

    20

    6

    E

    30

    4

    F

    30

    6

    20. When the switch is closed, what is the current in resistor X, and what is the potential difference (voltage) across resistor Z?
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    Explanation

    The correct answer is F.

    Post Comment

    The four statements are about the movement of blood during one complete circuit of the body.

    1. Blood flowing from the lungs flows through the heart twice.

    2. All the blood flowing from the lungs flows through the kidneys.

    3. All the blood flowing from the liver flows through the lungs.

    4. Only blood flowing from the digestive system flows through the liver.

    21. Which of the above statements are correct?
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    Explanation

    The correct answer is B.

    Post Comment

    In addition to diamond and graphite, another allotrope of carbon is Buckminster fullerene, C60, which is in the shape of a sphere.

    22. Which one of the following statements applies to all three allotropes?
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    Explanation

    The correct answer is D.

    Post Comment

    A lorry of mass m, and travelling initially at speed v along a horizontal road, is brought to rest by an average braking force F in time t.

    23. Ignoring any other resistive forces, what distance is travelled by the lorry during this time?
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    Explanation

    The correct answer is C.

    Post Comment

    A quadratic equation has solutions a and b.

    a + b = -5                           ab = 3

    24. What is the equation?
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    Explanation

    The correct answer is A.

    Post Comment

    Red-green colour blindness is a condition caused by a recessive allele. The gene is carried on the X chromosome.

    25. A man is red-green colour blind, which of his relatives must carry the recessive allele?
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    Explanation

    The correct answer is D.

    Post Comment

    A sample of an alkali XOH of mass 2.8 g was dissolved in water.

    This solution was neutralised by 12.5 cm3 of sulphuric acid of concentration 2.0 mol dm-3.

    2 XOH (aq) + H2SO4 (aq)  → X2SO4 (aq) + 2 H2O (l)

    26. What is the relative atomic mass of X? (Ar : H = 1, O = 16, S = 32)
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    Explanation

    The correct answer is C.

    Post Comment

    Taking the speed of sound in air as 300 m/s and in steel as 4800 m/s. A worker lies next to a railway line and hears the whistle of a train through the steel rails and 1.5 s later hears the same whistle through the air.

    27. How far away was the train when its whistle sounded?
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    Explanation

    The correct answer is C.

    Post Comment

    BMAT 2008 S2 Review Screen

    Instructions

    Below is a summary of your answers. You can review your questions in three (3) different ways.

    The buttons in the lower right-hand corner correspond to these choices:

    1. Review all of your questions and answers.
    2. Review questions that are incomplete.
    3. Review questions that are flagged for review. (Click the 'flag' icon to change the flag for review status.)

    You may also click on a question number to link directly to its location in the exam.

    BMAT 2008 S2 Section

    Final Answer Review Screen

    Instructions

    This review section allows you to view the answers you made and see whether they were correct or not. Each question accessed from this screen has an 'Explain Answer' button in the top left hand side. By clicking on this you will obtain an explanation as to the correct answer.

    At the bottom of this screen you can choose to 'Review All' answers, 'Review Incorrect' answers or 'Review Flagged' answers. Alternatively you can go to specific questions by opening up any of the sub-tests below.

    BMAT 2008 S2 Section

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