LEARNING NEED ANALYSIS (SCIENCE)

18 Questions
Learning Need Analysis (science)

The objective of this learning need analysis aims to find out your prior knowledge and understanding of Science in Biology, Chemistry and Physics. Login InstructionsEnter your name in this format: CLASS_REGISTER NUMBER_FULL NAMEExample: 101_01_FULL NAMEAnswer all the questions and choose your correct answer for each question.

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Questions and Answers
  • 1. 
    Long distance runners often eat bananas the night before their competitions. Which nutrient in a banana is important during the run?
    • A. 

      Carbohydrates

    • B. 

      Fibre

    • C. 

      Iron

    • D. 

      Vitamin C

  • 2. 
    The diagram below shows an unfertilised ostrich’s egg containing a large cell. What do the labels represent?
    • A. 

      Plasma membrane: X; Cytoplasm: Y; Nucleus: Z

    • B. 

      Plasma membrane: X; Cytoplasm: Z; Nucleus: Y

    • C. 

      Plasma membrane: Z; Cytoplasm: X: Nucleus: Y

    • D. 

      Plasma membrane: Z; Cytoplasm: Y: Nucleus: X

  • 3. 
    Under which of these conditions would transpiration (loss of water vapour from the leaves) be slowest?
    • A. 

      Temperature: Cold; Light: Dim; Air: Damp

    • B. 

      Temperature: Warm; Light: Dim: Air: Dry

    • C. 

      Temperature: Cold; Light: Bright; Air: Damp

    • D. 

      Temperature: Warm; Light: Bright; Air: Dry

  • 4. 
    The graph below shows the results of an investigation in oxygen release and oxygen intake by a green plant in different light conditions. For how many hours did respiration and photosynthesis take place during the investigation? 
    • A. 

      Respiration (hours): 3; Photosynthesis (hours): 7

    • B. 

      Respiration (hours): 4; Photosynthesis (hours): 6

    • C. 

      Respiration (hours): 10; Photosynthesis (hours): 7

    • D. 

      Respiration (hours): 10; Photosynthesis (hours); 6

  • 5. 
    Mr. and Mrs. Lim are married for 10 years and decided to start a family. During the consultation, they have learnt that the probability of their first male child is 50%.  Predict the probability of them having a second child to be a male again.
    • A. 

      25%

    • B. 

      50%

    • C. 

      75%

    • D. 

      100%

  • 6. 
    Country A has a high percentage of population diagnosed with diabetes. As a result, there is a sudden high demand for insulin in the health industry. Assuming you are a leading medical consultant in the health industry, how would you propose to the Health Minister an effective solution that will increase the insulin stock with the minimum cost within the shortest time?
    • A. 

      Transplantation of human pancreas

    • B. 

      Isolation of insulin from farm animals

    • C. 

      Production of insulin by biofermentation

    • D. 

      Stem cell therapy to replace diabetic patients’ pancreas with insulin producing cells

  • 7. 
    Which description corresponds to a neutron?
    • A. 

      Mass = 1/1850, electric charge = -1

    • B. 

      Mass = 1, electric charge = 0

    • C. 

      Mass = 1, electric charge = +1

    • D. 

      Mass = 4, electric charge = +2

  • 8. 
    Which one of the following reactions shows the formation of a compound from two elements?
    • A. 

      Carbon dioxide + calcium hydroxide → calcium carbonate + water

    • B. 

      Magnesium + sulfur → magnesium sulfide

    • C. 

      Oxygen + copper(II) sulfide → copper(II) sulfate

    • D. 

      Water → hydrogen + oxygen

  • 9. 
    A small amount of a dense white powder was mixed with water in a test tube. None of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. What can you say about the nature of the white powder?
    • A. 

      A slightly soluble acid

    • B. 

      A slightly soluble alkali

    • C. 

      A soluble neutral substance

    • D. 

      A very soluble alkali

  • 10. 
    Which of the following graphs represents how the temperature of gas varies as it eventually becomes a solid? 
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 11. 
    Compound Q melts at 78 oC and boils at 124 oC and is not soluble in water. Which apparatus can be used to obtain pure Q from a mixture of Q and water.
    • A. 

      Apparatus A

    • B. 

      Apparatus B

    • C. 

      Apparatus C

    • D. 

      Apparatus D

  • 12. 
    The chart below shows the percentage of heat energy reflected by different materials A, B, C and D. Which of the following combinations is the worst suited for use exteriorly to cool a house in hot climates? 
    • A. 

      Material A made of white paint

    • B. 

      Material B made of red bricks

    • C. 

      Material C made of aluminium

    • D. 

      Material D made of layers of soil

  • 13. 
    When a force is applied to a body, several effects are possible.  Which of the following effects could not occur?
    • A. 

      The body changes direction.

    • B. 

      The body slows down.

    • C. 

      The body speeds up.

    • D. 

      The mass of the body decreases.

  • 14. 
    An iron ball of 10 kg sinks in water with a uniform speed of 2 m/s.  Which of the following statements on the forces acting on the iron ball is correct?
    • A. 

      The downward force is equal to the upward force.

    • B. 

      The downward force is less than the upward force.

    • C. 

      The downward force is more than the upward force.

    • D. 

      There is no force acting on the iron ball.

  • 15. 
    A uniform beam is pivoted at its midpoint.  An object is placed on the beam as shown.  Which force will re-balance the system?
    • A. 

      10 N acting downward, 25 cm to the right of the midpoint.

    • B. 

      20 N acting upward, 25 cm to the right of the midpoint.

    • C. 

      25 N acting downward, 20 cm to the right of the midpoint.

    • D. 

      50 N acting upward, 10 cm to the right of the midpoint.

  • 16. 
    The figure below shows how the position d of a toy car changes with time t.  Which of the following statement best describes the motion of the toy car?
    • A. 

      The toy car is moving at uniform speed.

    • B. 

      The toy car’s highest speed is between 0 to 5 second.

    • C. 

      The toy car’s highest speed is between 10 to 15 second.

    • D. 

      The toy car’s speed increases from 0 to 5 second.

  • 17. 
    The base area of four different pairs of snowshoes are shown below.  Which pair of snowshoes should Jack buy if he does not want to sink into the snow while walking?
    • A. 

      0.2 square meter

    • B. 

      0.3 square meter

    • C. 

      0.4 square meter

    • D. 

      0.5 square meter

  • 18. 
    Jeremy wants to study the conversion of potential energy of a tennis ball to kinetic energy as it moves down a ramp.  Which of the following apparatus is not needed to do the experiment?
    • A. 

      Electronic balance

    • B. 

      Metre rule

    • C. 

      Spring balance

    • D. 

      Stopwatch