Biology Revision 3.0 / 5 based on 1 rating ? BiologyASAQA Created by: CammieCreated on: 17-05-13 09:55 What do antibodies consist of? Amino acids 1 of 28 What hold amino acids together? Peptide bonds 2 of 28 Why does cholera only affect epithelial cells in the small intestine? Their protein shape is complementary to the receptor 3 of 28 Addition of water Hydrolysis reaction 4 of 28 Removal of water Condensation reaction 5 of 28 What are pathogens? Bacteria, fungi, viruses 6 of 28 How do pathogens cause disease Damage cells, produce toxins 7 of 28 What are monoclonal antibodies produced from? Single clone of B-cells 8 of 28 Where should cylinders be cut from? Root of the plant, through the same proportion of tissue 9 of 28 Resolution of light microscope? 200nm 10 of 28 Resolution of electron microscope? 0.0001micrometers 11 of 28 Magnification of electron microscope? x1500000 12 of 28 What does a TEM do? Examines ultrastructure 13 of 28 What dimension does a TEM see in? Two-dimensional 14 of 28 What does a SEM do? Reveals surface detail 15 of 28 What dimension does a SEM see in? Three-dimensional 16 of 28 What's Fick's Law? Rate of diffusion = (surface area x concentration gradient) / thickness of exchange surface 17 of 28 For efficient diffusion, what should the surface area be? Large 18 of 28 For efficient diffusion, what should the concentration gradient be? Large 19 of 28 For efficient diffusion, what should the exchange surface be? Thin 20 of 28 For efficient diffusion, what should the temperature be? High 21 of 28 Pulmonary ventilation equals? Tidal volume x breathing rate 22 of 28 Why do you homogenise tissues in cell fractionation? To break open the cells, release the organelles 23 of 28 Why do you filter the suspension in cell fractionation? Remove cell debris 24 of 28 What is an antigen? A protein that causes an immune response 25 of 28 Why can't an enzyme supplement be taken by mouth? It's a protein, and would be digested by other enzymes 26 of 28 Why are volunteers divided randomly? To avoid bias 27 of 28 Why are control groups used? To ensure the results you get, down to the variable you're testing 28 of 28
Comments
No comments have yet been made