Microscopes and Micro-Organisms 0.0 / 5 ? BiologyMicrobes and diseaseGCSEWJEC Created by: eeeeeeeeeeeeeeCreated on: 19-04-14 21:52 How does a light microscope work? Passes light through material on a glass slide 1 of 17 How does an electron microscope work? Beam of electrons 2 of 17 Which has greater magnification, electron or light microscope? Electron microscope 3 of 17 What are all living organisms composed of? One or more cells 4 of 17 What is the basic 'unit' of life? The cell 5 of 17 How are cells formed? From pre-existing cells during cell division 6 of 17 What is passed on from cell to cell when division occurs? Heredity information (DNA) 7 of 17 Do all cells have the same basic chemical composition? Yes 8 of 17 What are micro-organisms? Microscopic life forms 9 of 17 What are the smallest forms of life? (so simple it's uncertain as to whether they are living things) Viruses 10 of 17 What do viruses consist of? Some genetic material (DNA or RNA) inside a protein case 11 of 17 What produces inside a host cell? Viruses 12 of 17 How do bacteria reproduce? Asexually by dividing into 2 13 of 17 What reproduces asexually by budding (growing a new cell from an existing one before the new cell breaks off) Yeasts 14 of 17 What is thought to be the earliest forms of life? Bacteria 15 of 17 In comparison to viruses, bacteria are... Larger 16 of 17 In comparison to yeasts, viruses are... Smaller 17 of 17
WJEC GCSE Biology Unit 1.6 - Ecosystems, Nutrient Cycles & Human Impact on the Environment Revision 0.0 / 5
Comments
No comments have yet been made