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Sec 4 NA Sci Bio 2015 TYS MCQ

Quiz by HAO YI

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20 questions
Show answers
  • Q1

    What is the shape of a human red blood cell?

    bioconcave disc

    rectangular

    spherical

    cylindrical

    60s
  • Q2

    The d

    Which structure is an organ and which structure is a tissue?

    Question Image

    A

    B

    C

    D

    60s
  • Q3

    The diagram represents three animal cells, P, Q and R. 

    Each cell has oxygen molecules both inside and outside of the cell.

    Oxygen molecules move into and out of the cells by diffusion.

    Which row gives the direction of movement of the oxygen molecules for each cell?

    Question Image

    A

    B

    C

    D

    60s
  • Q4

    The four symbols represent different small molecules which can link up to form larger molecules. 

    Which large molecule is a protein?

    Question Image

    A

    B

    C

    D

    60s
  • Q5

    Which organ breaks down alcohol?

    gall bladder

    pancreas

    liver

    ileum

    60s
  • Q6

    The diagram shows a test-tube at the start and at the end of an enzyme experiment.

    At the end of the experiment, the mixture in the test-tube is more acidic than at the start of the experiment. 

    Which row correctly identifies the enzyme and its substrate?

    Question Image

    A

    B

    C

    D

    60s
  • Q7

    The diagram shows the human alimentary canal.

    Which row shows the route of food through the alimentary canal?

    Question Image

    A

    B

    C

    D

    60s
  • Q8

    The diagram shows an experiment that has been in light of several hours.

    Compared with atmospheric air, the gas collected at X has 

    Question Image

    more carbon dioxide.

    more oxygen.

    more nitrogen.

    the same composition.

    60s
  • Q9

    Plants make carbohydrates by carrying out photosynthesis in leaves.

    Which part of a leaf is concerned in moving carbohydrates out of the leaf?

    stomata

    chloroplasts

    mesophyll cells

    vascular bundles

    60s
  • Q10

    Which row states the function of the xylem and of the phloem in a flowering plant?

    Question Image

    A

    B

    C

    D

    60s
  • Q11

    Four root hair cells are placed in water for one hour. 

    At the start of the experiment, the internal concentration is the same in all four cells.

    Which root hair cell will absorb the most water?

    Answer Image
    Answer Image
    Answer Image
    Answer Image
    60s
  • Q12

    The diagram shows a section through the human heart.

    Which route is followed by blood entering at X?

    Question Image

    A

    B

    C

    D

    60s
  • Q13

    Why do arteries have thick muscular walls?

    to allow the valves to operate

    to resist the pressure caused by the heart

    to allow exchange of materials between the blood plasma and tissue fluid

    to generate friction to slow the movement of blood

    60s
  • Q14

    The diagram shows the blood system of a mammal.

    Which organ does the part labeled X represent?

    Question Image

    heart

    lungs

    liver

    kidneys

    60s
  • Q15

    Which word equation represents anaerobic respiration in muscles?

    glucose + oxygen \rightarrow carbon dioxide + water + energy

    glucose \rightarrow lactic acid + carbon dioxide + energy

    glucose \rightarrow lactic acid + energy

    glucose + oxygen \rightarrow lactic acid + water + energy

    60s

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