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2019 Paper 1 Video Solutions - A/L Biology - Introduction to GCE A/L 2019



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  • March 13, 2021, 2:03 p.m.
    Mbida olga

    A good respiratory surface should be moist inorder for  respiratory gases to dissolve in it 

    It should be highly vascularised so that the respiratory gases should be distributed all round the body

    It should have a thin membrane to reduce the  diffusion distance . This is because  rate of diffusion is invesely propôrtional to distance

  • March 13, 2021, 1:47 p.m.
    Wanyu

    a)State the characteristics of a respiratory surface

    • June 6, 2021, 9:20 p.m.
      Forbanson hope asanji

      They must be moist to absorb gases


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  • 1ST YEAR MEDICAL STUDENT IN THE FACULTY OF MEDECINE AND BIOMEDICAL SCIENCES OF THE UNIVERSITY OF YAOUNDE 1


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