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

The movement of air in and out of the lungs can be measured using a spirometer. The graph is a trace from a spirometer.

1. Which lettered arrow represents the tidal volume?
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    Explanation

    The correct answer is A.

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    You are told that three different gas jars contain carbon dioxide, hydrogen and oxygen respectively.

    2. Which single method of testing for gases will enable you to identify all three gases?
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    Explanation

    The correct answer is B.

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    One type of fission of gives   and   as the main products.

    3. What else would be given off in the fission reaction?
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    Explanation

    The correct answer is D.

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    Four 1000 Ω resistors are connected as shown in the following circuit.

    Two of the resistors are changed to 900 Ω.

    4. Changing which pair of resistors would make a current flow in the ammeter?
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    Explanation

    The correct answer is C.

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    Smoking cigarettes can lead to emphysema. This occurs because:

    5.
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    Explanation

    The correct answer is D.

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    Using the formula:

    z = xy 2

    calculate the value of y when:

    z = 1.2 x 1013

    x = 3.0 x 106

    6.
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    Explanation

    The correct answer is C.

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    During metabolism, two molecules of pyruvic acid, C3H4O3, are formed from one molecule of glucose, C6H12O6.

    7. This is an example of which of the following?
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    Explanation

    The correct answer is A.

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    The length of a person’s eyelashes is controlled by a single gene. The diagram shows the inheritance of this feature in a family.

    8. Which individual, A, B, C, D, or E, must be heterozygous for eyelash length?
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    Explanation

    The correct answer is A.

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    Two variables are connected by the relation: A µ 1/B2.

    B is increased by 40%.

    9. Describe the change in A in percentage terms.
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    Explanation

    The correct answer is C.

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    A uniform beam of length 60 cm weighs 10 N. Its centre of gravity (the point where its weight can be assumed to act) is at its centre. A weight of 800 N rests at one end of the beam as shown, and the beam is balanced by another weight of 200 N placed at distance x from the pivot.

    10. What is distance x in cm?
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    Explanation

    The correct answer is B.

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    Which fraction is the percentage by mass of water of crystallisation in sodium carbonate decahydrate?

    (Relative atomic masses, Ar: Na=23; C=12; O=16; H=1)

    11.
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    Explanation

    The correct answer is D.

    Post Comment
    Jiren Medicmind Tutor

    Mon, 18 Oct 2021 13:44:23

    B and D have the same answer tho

    Which row of the table shows what occurs in the eye when you watch a bird flying away from you?

    ciliary muscles suspensory ligaments lens becomes
    A contract loosened

    more convex

    B

    Relax tightened less convex
    C contract tightened

    less convex

    D

    Relax loosened more convex
    E contract loosened

    less convex

    F

    Relax tightened

    more convex

    12.
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    Explanation

    The correct answer is B.

    Post Comment

    Rearrange the following equation to give x in terms of y.

     

    13.
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    Explanation

    The correct answer is A.

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    A pulse of frequency 100 kHz is emitted from an ultrasound scanner, and is reflected from a fetus 10 cm below the transmitter placed on the mother’s abdomen. The speed of sound within the mother’s body is 500 m/s.

    14. How long does it take for the pulse to reach the receiver which is adjacent to the transmitter?
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    Explanation

    The correct answer is B.

    Post Comment

    The reaction between nitrogen and hydrogen to form ammonia is exothermic.

    N2 + 3H2 → 2NH3       ∆H -ve

    The strengths of the bonds in the three molecules are as shown.

    N ≡ N         x kJ

    H − H         y kJ

    N − H  z kJ

    15. Which statement can be deduced from this information?
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    Explanation

    The correct answer is D.

    Post Comment

    The diagram shows three sections, separated by hinge-like joints, of the leg of a crab with an exoskeleton.

    i. A part that acts in a similar way to a tendon.

    ii. A part that has a role that is similar to that of a ligament.

    iii. A muscle that is antagonistic to B.

    16. By comparison with the elbow joint of a human, select the letters that match the following:
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    Explanation

    The correct answer is B.

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    Evaluate

    (√5 – √2)² (√5 + √2)²

    17.
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    Explanation

    The correct answer is A.

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    A sample of rock contains 235U and 207Pb in the proportion one part 235U to seven parts 207Pb. It is known that 235U decays to 207Pb with a half life of 7.1 × 108 years.

    18. The maximum possible age of the rock is:
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    Explanation

    The correct answer is B.

    Post Comment

    A sample of an acid, H2X, weighing 4.5 g was dissolved in water.

    This solution was neutralised by 50.0 cm3 of aqueous sodium hydroxide containing 2 mol/dm3.

    H2X(aq) + 2NaOH(aq) → Na2X + 2H2O

    19. What is the relative molecular mass, Mr, of the acid?
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    Explanation

    The correct answer is B.

    Post Comment

    The table shows the concentrations, in arbitrary units, of four substances. These substances are present in each of two animal cells, K and L, whose cell membranes are in contact.

    concentration in arbitrary units
    substance cell K

    cell L

    cytosine

    9 15
    glucose 12

    8

    magnesium ions

    7 4
    nitrate ions 6

    3

    20. Which movement of a substance between the two cells requires oxygen?
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    Explanation

    The correct answer is C.

    Post Comment

    In the shape shown below, A, B and C are the vertices of an equilateral triangle, side length x The arc AC forms a semicircle.

     

    21. Which of the following alternatives is a correct expression for the area, in cm², of the shape?
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    Explanation

    The correct answer is A.

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    When a 1 kg mass is dropped from the top of a building 20 m high it hits the Earth with a speed of 20 m/s.

    22. What would be its speed if the same experiment was carried out on a planet where the acceleration due to gravity is ¼ that on Earth?
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    Explanation

    The correct answer is D.

    Post Comment

    A sample of butane, C4H10 is treated with deuterium, D (an isotope of hydrogen) and some of the hydrogen atoms are replaced by deuterium atoms.

    Analysis shows that the substituted butane contains 80.0% of carbon by mass.

    23. Which one of the following is its formula? (Ar: H=1; D=2; C=12)
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    Explanation

    The correct answer is B.

    Post Comment

    During the fetal stage an opening, the foramen ovale, exists in the septum between the two This allows blood to flow from the right atrium to the left atrium.

    24. The opening should close during birth. If this fails to happen, which one of the following is the main problem to the health of the baby?
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    Explanation

    The correct answer is A.

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    A heart exerts a maximum (systolic) pressure of 152 mm Hg. This pressure is applied to an aorta of cross sectional area 2.0 cm2.

    25. What force must be generated by the heart in order to apply this pressure? (Take 760 mm Hg to be 1.0 atmosphere which is 100 kPa.)
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    Explanation

    The correct answer is B.

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    Which of the following thermal decomposition reactions will require the highest temperature?

    26.
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    Explanation

    The correct answer is D.

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    A circle has a diameter of 20 cm.

    The line AC is a diameter of the circle.

    B is a point on the circumference of the circle with AB = 12 cm.

    The point D lies on the arc AC on the opposite side to point B.

    27. What is the sine of ∠BDC?
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    Explanation

    The correct answer is B.

    Post Comment

    BMAT 2005 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 2005 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 2005 S2 Section

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