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Sec 4 Pure Biology TYS MCQ 2015 Set B

Quiz by HAO YI

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40 questions
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  • Q1

    The table shows comparisons between a red blood cell and a root hair cell.

    Which comparisons are correct?

    Question Image

    3 and 4 only

    1 and 2 only

    1, 3 and 4

    1, 2 and 3

    60s
  • Q2

    The diagram shows a cell as it appears in an electron micrograph.

    In which part of a living cell is the oxygen concentration lowest?

    Question Image

    A

    B

    C

    D

    60s
  • Q3

    The diagram show four identical plant cells.

    The number of dots represent the concentration of a chemical and the arrows show the directions in which the chemical is moving.

    Which diagrams represent the cells carrying out active transport?

    Question Image

    2 and 3

    1 and 2

    1 and 4

    3 and 4

    60s
  • Q4

    Which conversion does not take place in the body of a human?

    glycogen into glucose

    amino acids into polypeptides

    glucose into starch

    glycerol and fatty acids into fats

    60s
  • Q5

    Which statements are correct for all enzymes?

    1        Enzymes have an optimum pH.

    2        Each enzyme can catalyse a number of different reactions.

    3        Enzymes lower the activation energy needed for a reaction.

    4        Enzymes catalyse only reactions that break down complex substances.

    5        The shape of the active site is permanently altered by excessive heat.

    6        Enzymes work fastest at 35 oC. 

    4, 5 and 6

    2, 4 and 6

    1, 2 and 3

    1, 3 and 5

    60s
  • Q6

    The graph shows the results of an experiment on enzyme activity.

    Which label for the x-axis is correct?

    Question Image

    temperature

    concentration of enzyme-substrate complex

    time

    pH

    60s
  • Q7

    The diagram shows some partially digested food moving along the ileum.

    Which row is correct for muscle Y at region W?

    Question Image

    A

    B

    C

    D

    60s
  • Q8

    The diagram shows part of the alimentary canal. 

    What does not happen at region Z?

    Question Image

    Polypeptides are digested.

    Enzymes are added from the liver.

    Fat is emulsified.

    Acid is neutralised.

    60s
  • Q9

    The diagram shows part of a transverse section of a leaf.

    Which cells contain chloroplasts?

    Question Image

    1 and 2 only

    2 only

    2, 3 and 4 only

    3 and 4 only

    60s
  • Q10

    The graph shows the effect of various factors on the rate of photosynthesis.

    Which factor is the limiting factor at X?

    Question Image

    temperature

    water

    light intensity

    carbon dioxide concentration

    60s
  • Q11

    Diagram 1 shows some components of a plant stem in longitudinal section.

    Diagram 2 shows a photomicrograph of part of a plant stem in transverse section.

    Which part of diagram 2 contains the components shown in diagram 1?

    Question Image

    A

    B

    C

    D

    60s
  • Q12

    What is a result of the action of stomata?

    Question Image

    A

    B

    C

    D

    60s
  • Q13

    Transpiration enables water to reach the top of trees.

    Which of these statements correctly describes part of this process?

    1       Water evaporates into the air spaces between the palisade cells.

    2       Water molecules are pulled upwards in the xylem.

    3       Water molecules are pulled upwards in the phloem.

    4       Water vapour diffuses through the spongy mesophyll cells.

    1 and 2

    3 and 4

    2 only

    2 and 3

    60s
  • Q14

    The diagram shows red blood cells in a capillary near the wall of an alveolus.

    Which process explains how oxygen passes from the plasma into the red blood cells?

    Question Image

    diffusion of dissolved oxygen from the plasma into the red blood cells

    active transport of oxygen by the red blood cells

    high blood pressure forcing the oxygen into the red blood cells

    diffusion of microscopic bubbles of oxygen from the plasma into the red blood cells

    60s
  • Q15

    The diagram represents part of the human circulatory system, with some blood vessels identified by letters.

    The table shows comparisons of the carbon dioxide concentration in the identified blood vessels.

    Which comparisons of carbon dioxide concentration are correct?

    Question Image

    1, 3 and 4 only

    2 and 3 only

    1, 2, 3 and 4

    1 and 4 only

    60s

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